Definition of treacherous in English:

treacherous

adjective ˈtrɛtʃ(ə)rəsˈtrɛtʃ(ə)rəs

1Guilty of or involving betrayal or deception.
a treacherous Gestapo agent
memory is particularly treacherous
Example sentencesExamples
- Philip found that following the logic of these conspiracy theories was deeply treacherous and disorienting.
- Is it treacherous to say I hope we lose every game in the World Cup?
- Josh had been promoted recently because of a treacherous betrayal by the old Number Four.
- They are not anywhere near as treacherous as crack addicts or alcoholics for that matter.
- Gone are interesting characters like the greedy and treacherous aide, and that marvelous biplane.
- They are a treacherous people who violate oaths and covenants.
- I realise that he likes the tortured martyr parts in which he valiantly combats the treacherous world that seeks to subdue him.
- For example, he embodied animals that were weak, cowardly, false, and treacherous.
- The earliest documented ballads feature Robin Hood as lusty, treacherous and violent.
- And behind that grinning face lay a treacherous, poisonous personality.
- They are not deceitful or treacherous in their conduct and are faithful to their oaths and promises.
- When the robber opened the note and read what the king had written, he realized the king had devised a treacherous plan.
- The left on Auckland City's council have become self-indulgent and treacherous to each other.
- But David says we should not be too confident that those people whose heads looked down from the bar were truly treacherous.
- He proved a selfish, egocentric, ungrateful, and treacherous recipient of Noble's many kindnesses.
- Rather than admit the great man is in fact a great flop, they label these dedicated economic soldiers as treacherous.
- He's deposed by a treacherous underling, winds up on the street, and is taken in by a tough noodle vendor with messed up teeth.
- The fate of the farm animals was so grim, the pigs so mean and mendacious and treacherous, the sheep so stupid.
Synonyms
traitorous, disloyal, perfidious, faithless, unfaithful, duplicitous, false-hearted, deceitful, false, untrue, back-stabbing, double-crossing, double-dealing, two-faced, Janus-faced, untrustworthy, unreliable, undependable, fickle
apostate, renegade, subversive, seditious, rebellious, mutinous, breakaway
treasonable, treasonous
informal two-timing
rare Punic
2(of ground, water, conditions, etc.) presenting hidden or unpredictable dangers.
a holidaymaker was swept away by treacherous currents
Example sentencesExamples
- The views open out to the north-east, across the treacherous Pentland Firth to Orkney, as you reach Portskerra pier.
- The earth is rich and dead, and offers treacherous footing.
- The road in Tunduffe has now gained such a high level of points that Gardai declare it treacherous and a serious accident risk.
- My inertia in not pushing it backwards into a safe zone is as guilty for the shattered glass as the treacherous wind.
- I thought that in my years as a reporter I had navigated some fairly treacherous terrain.
- He parallels the paths of two very different figures, each coming of age and choosing a path in life during a treacherous time.
- Weather conditions in the area at the time of the incident were described as treacherous by local emergency services.
- A grieving family has pleaded for action to be taken on a treacherous bend that this week claimed the life of their mother.
- The descent is worse, in parts a sheer drop on a thin track almost hidden by heather with treacherous rocks and holes ready to trip up even the most nimble feet.
- It resembles a treacherous dungeon, which is strange because one wall is entirely windows.
- The Garavogue is a fast-flowing treacherous river and we can do without those vandals who steal the ring buoys.
- The women worked the wind-swept fields while the men worked the quarries and manned fishing boats in famously treacherous seas.
- I dragged myself up, hanging on to the treacherous railing, and lumbered up the stairs, bruised all over.
- If the Marina is known for its strong undercurrents, the sand on Elliots Beach is treacherous as it keeps shifting.
- Some 500,000 vessels a year pass through the treacherous, narrow Bosporus and Dardanelles straits.
- On that day Couples' tee-shot to Golden Bell, the treacherous par three, clung miraculously to the bank of the Creek.
- We made it to the top, but coming down was more treacherous.
- Many side roads were treacherous and remained so till Tuesday and several minor accidents occurred as a result.
- It can be very treacherous and can give way at any time.
- As the treacherous winter months lie ahead, let's not wait for more alarming statistics to bring us to our senses.
Synonyms
dangerous, hazardous, perilous, unsafe, precarious, risky, deceptive, unreliable, undependable, unstable
icy, ice-covered, slippery, glassy
informal dicey, hairy, slippy
North American informal gnarly

Derivatives

treacherously

adverbˈtrɛtʃ(ə)rəsli

It rained heavily during the afternoon, which made the stages very muddy and treacherously slippy.
Example sentencesExamples
- As it was, hopeful rather than thoughtful balls were plummeted into a two man full-forward line that had virtually no chance of securing possession given the tendency of the ball to skid away from them on the treacherously greasy surface.
- I defy anyone who hasn't read the book to decipher this film, to understand the implications, motivations and emotional complexities of a story dependent on treacherously subtle codes of conduct.
- But I made an exception for this very tiny stretch of road, along this particularly treacherously dangerous, high-traffic road.
- The snow is treacherously soft: I can't cross where I'd planned.

treacherousness

noun ˈtrɛtʃ(ə)rəsnəsˈtrɛtʃ(ə)rəsnəs

But caution must be adopted that nobody underestimates the treacherousness, cunning, craftiness and the ruthlessness of the regime.
Example sentencesExamples
- In mythology, the treacherousness of water is personified as alluring and irresistible women without souls who lure unwary men to a watery death.
- The introduction speaks of the harshness and treacherousness of the Antarctic - so much so that I actually felt a chill.
- Fairbanks is made out to be a pretty dangerous town with flights in the winter operating perhaps only a few times a week due to the difficulty and treacherousness of getting around the ice fog.
- Thus far, their collected data confirm the treacherousness of the bottom.

Origin

Middle English (in sense 1): from Old French trecherous, from trecheor 'a cheat', from trechier 'to cheat'.

Rhymes

lecherous

Definition of treacherous in US English:

treacherous

adjectiveˈtrɛtʃ(ə)rəsˈtreCH(ə)rəs

1Guilty of or involving betrayal or deception.
a treacherous Gestapo agent
memory is particularly treacherous
Example sentencesExamples
- They are not anywhere near as treacherous as crack addicts or alcoholics for that matter.
- The left on Auckland City's council have become self-indulgent and treacherous to each other.
- Gone are interesting characters like the greedy and treacherous aide, and that marvelous biplane.
- They are not deceitful or treacherous in their conduct and are faithful to their oaths and promises.
- Rather than admit the great man is in fact a great flop, they label these dedicated economic soldiers as treacherous.
- Is it treacherous to say I hope we lose every game in the World Cup?
- He proved a selfish, egocentric, ungrateful, and treacherous recipient of Noble's many kindnesses.
- He's deposed by a treacherous underling, winds up on the street, and is taken in by a tough noodle vendor with messed up teeth.
- I realise that he likes the tortured martyr parts in which he valiantly combats the treacherous world that seeks to subdue him.
- But David says we should not be too confident that those people whose heads looked down from the bar were truly treacherous.
- The earliest documented ballads feature Robin Hood as lusty, treacherous and violent.
- And behind that grinning face lay a treacherous, poisonous personality.
- Josh had been promoted recently because of a treacherous betrayal by the old Number Four.
- For example, he embodied animals that were weak, cowardly, false, and treacherous.
- Philip found that following the logic of these conspiracy theories was deeply treacherous and disorienting.
- They are a treacherous people who violate oaths and covenants.
- When the robber opened the note and read what the king had written, he realized the king had devised a treacherous plan.
- The fate of the farm animals was so grim, the pigs so mean and mendacious and treacherous, the sheep so stupid.
Synonyms
traitorous, disloyal, perfidious, faithless, unfaithful, duplicitous, false-hearted, deceitful, false, untrue, back-stabbing, double-crossing, double-dealing, two-faced, janus-faced, untrustworthy, unreliable, undependable, fickle
1. 1.1 (of ground, water, conditions, etc.) hazardous because of presenting hidden or unpredictable dangers.
  a vacationer was swept away by treacherous currents
  Example sentencesExamples
  I thought that in my years as a reporter I had navigated some fairly treacherous terrain.
  The views open out to the north-east, across the treacherous Pentland Firth to Orkney, as you reach Portskerra pier.
  Weather conditions in the area at the time of the incident were described as treacherous by local emergency services.
  A grieving family has pleaded for action to be taken on a treacherous bend that this week claimed the life of their mother.
  Some 500,000 vessels a year pass through the treacherous, narrow Bosporus and Dardanelles straits.
  The road in Tunduffe has now gained such a high level of points that Gardai declare it treacherous and a serious accident risk.
  I dragged myself up, hanging on to the treacherous railing, and lumbered up the stairs, bruised all over.
  We made it to the top, but coming down was more treacherous.
  The earth is rich and dead, and offers treacherous footing.
  As the treacherous winter months lie ahead, let's not wait for more alarming statistics to bring us to our senses.
  If the Marina is known for its strong undercurrents, the sand on Elliots Beach is treacherous as it keeps shifting.
  He parallels the paths of two very different figures, each coming of age and choosing a path in life during a treacherous time.
  My inertia in not pushing it backwards into a safe zone is as guilty for the shattered glass as the treacherous wind.
  It resembles a treacherous dungeon, which is strange because one wall is entirely windows.
  The Garavogue is a fast-flowing treacherous river and we can do without those vandals who steal the ring buoys.
  The descent is worse, in parts a sheer drop on a thin track almost hidden by heather with treacherous rocks and holes ready to trip up even the most nimble feet.
  On that day Couples' tee-shot to Golden Bell, the treacherous par three, clung miraculously to the bank of the Creek.
  Many side roads were treacherous and remained so till Tuesday and several minor accidents occurred as a result.
  It can be very treacherous and can give way at any time.
  The women worked the wind-swept fields while the men worked the quarries and manned fishing boats in famously treacherous seas.
  Synonyms
  dangerous, hazardous, perilous, unsafe, precarious, risky, deceptive, unreliable, undependable, unstable

Origin

Middle English (in treacherous (sense 1 of the adjective)): from Old French trecherous, from trecheor ‘a cheat’, from trechier ‘to cheat’.

单词	treacherous
释义	Definition of treacherous in English: treacherous adjective ˈtrɛtʃ(ə)rəsˈtrɛtʃ(ə)rəs 1Guilty of or involving betrayal or deception. a treacherous Gestapo agent memory is particularly treacherous Example sentencesExamples Philip found that following the logic of these conspiracy theories was deeply treacherous and disorienting. Is it treacherous to say I hope we lose every game in the World Cup? Josh had been promoted recently because of a treacherous betrayal by the old Number Four. They are not anywhere near as treacherous as crack addicts or alcoholics for that matter. Gone are interesting characters like the greedy and treacherous aide, and that marvelous biplane. They are a treacherous people who violate oaths and covenants. I realise that he likes the tortured martyr parts in which he valiantly combats the treacherous world that seeks to subdue him. For example, he embodied animals that were weak, cowardly, false, and treacherous. The earliest documented ballads feature Robin Hood as lusty, treacherous and violent. And behind that grinning face lay a treacherous, poisonous personality. They are not deceitful or treacherous in their conduct and are faithful to their oaths and promises. When the robber opened the note and read what the king had written, he realized the king had devised a treacherous plan. The left on Auckland City's council have become self-indulgent and treacherous to each other. But David says we should not be too confident that those people whose heads looked down from the bar were truly treacherous. He proved a selfish, egocentric, ungrateful, and treacherous recipient of Noble's many kindnesses. Rather than admit the great man is in fact a great flop, they label these dedicated economic soldiers as treacherous. He's deposed by a treacherous underling, winds up on the street, and is taken in by a tough noodle vendor with messed up teeth. The fate of the farm animals was so grim, the pigs so mean and mendacious and treacherous, the sheep so stupid. Synonyms traitorous, disloyal, perfidious, faithless, unfaithful, duplicitous, false-hearted, deceitful, false, untrue, back-stabbing, double-crossing, double-dealing, two-faced, Janus-faced, untrustworthy, unreliable, undependable, fickle apostate, renegade, subversive, seditious, rebellious, mutinous, breakaway treasonable, treasonous informal two-timing rare Punic 2(of ground, water, conditions, etc.) presenting hidden or unpredictable dangers. a holidaymaker was swept away by treacherous currents Example sentencesExamples The views open out to the north-east, across the treacherous Pentland Firth to Orkney, as you reach Portskerra pier. The earth is rich and dead, and offers treacherous footing. The road in Tunduffe has now gained such a high level of points that Gardai declare it treacherous and a serious accident risk. My inertia in not pushing it backwards into a safe zone is as guilty for the shattered glass as the treacherous wind. I thought that in my years as a reporter I had navigated some fairly treacherous terrain. He parallels the paths of two very different figures, each coming of age and choosing a path in life during a treacherous time. Weather conditions in the area at the time of the incident were described as treacherous by local emergency services. A grieving family has pleaded for action to be taken on a treacherous bend that this week claimed the life of their mother. The descent is worse, in parts a sheer drop on a thin track almost hidden by heather with treacherous rocks and holes ready to trip up even the most nimble feet. It resembles a treacherous dungeon, which is strange because one wall is entirely windows. The Garavogue is a fast-flowing treacherous river and we can do without those vandals who steal the ring buoys. The women worked the wind-swept fields while the men worked the quarries and manned fishing boats in famously treacherous seas. I dragged myself up, hanging on to the treacherous railing, and lumbered up the stairs, bruised all over. If the Marina is known for its strong undercurrents, the sand on Elliots Beach is treacherous as it keeps shifting. Some 500,000 vessels a year pass through the treacherous, narrow Bosporus and Dardanelles straits. On that day Couples' tee-shot to Golden Bell, the treacherous par three, clung miraculously to the bank of the Creek. We made it to the top, but coming down was more treacherous. Many side roads were treacherous and remained so till Tuesday and several minor accidents occurred as a result. It can be very treacherous and can give way at any time. As the treacherous winter months lie ahead, let's not wait for more alarming statistics to bring us to our senses. Synonyms dangerous, hazardous, perilous, unsafe, precarious, risky, deceptive, unreliable, undependable, unstable icy, ice-covered, slippery, glassy informal dicey, hairy, slippy North American informal gnarly Derivatives treacherously adverbˈtrɛtʃ(ə)rəsli It rained heavily during the afternoon, which made the stages very muddy and treacherously slippy. Example sentencesExamples As it was, hopeful rather than thoughtful balls were plummeted into a two man full-forward line that had virtually no chance of securing possession given the tendency of the ball to skid away from them on the treacherously greasy surface. I defy anyone who hasn't read the book to decipher this film, to understand the implications, motivations and emotional complexities of a story dependent on treacherously subtle codes of conduct. But I made an exception for this very tiny stretch of road, along this particularly treacherously dangerous, high-traffic road. The snow is treacherously soft: I can't cross where I'd planned. treacherousness noun ˈtrɛtʃ(ə)rəsnəsˈtrɛtʃ(ə)rəsnəs But caution must be adopted that nobody underestimates the treacherousness, cunning, craftiness and the ruthlessness of the regime. Example sentencesExamples In mythology, the treacherousness of water is personified as alluring and irresistible women without souls who lure unwary men to a watery death. The introduction speaks of the harshness and treacherousness of the Antarctic - so much so that I actually felt a chill. Fairbanks is made out to be a pretty dangerous town with flights in the winter operating perhaps only a few times a week due to the difficulty and treacherousness of getting around the ice fog. Thus far, their collected data confirm the treacherousness of the bottom. Origin Middle English (in sense 1): from Old French trecherous, from trecheor 'a cheat', from trechier 'to cheat'. Rhymes lecherous Definition of treacherous in US English: treacherous adjectiveˈtrɛtʃ(ə)rəsˈtreCH(ə)rəs 1Guilty of or involving betrayal or deception. a treacherous Gestapo agent memory is particularly treacherous Example sentencesExamples They are not anywhere near as treacherous as crack addicts or alcoholics for that matter. The left on Auckland City's council have become self-indulgent and treacherous to each other. Gone are interesting characters like the greedy and treacherous aide, and that marvelous biplane. They are not deceitful or treacherous in their conduct and are faithful to their oaths and promises. Rather than admit the great man is in fact a great flop, they label these dedicated economic soldiers as treacherous. Is it treacherous to say I hope we lose every game in the World Cup? He proved a selfish, egocentric, ungrateful, and treacherous recipient of Noble's many kindnesses. He's deposed by a treacherous underling, winds up on the street, and is taken in by a tough noodle vendor with messed up teeth. I realise that he likes the tortured martyr parts in which he valiantly combats the treacherous world that seeks to subdue him. But David says we should not be too confident that those people whose heads looked down from the bar were truly treacherous. The earliest documented ballads feature Robin Hood as lusty, treacherous and violent. And behind that grinning face lay a treacherous, poisonous personality. Josh had been promoted recently because of a treacherous betrayal by the old Number Four. For example, he embodied animals that were weak, cowardly, false, and treacherous. Philip found that following the logic of these conspiracy theories was deeply treacherous and disorienting. They are a treacherous people who violate oaths and covenants. When the robber opened the note and read what the king had written, he realized the king had devised a treacherous plan. The fate of the farm animals was so grim, the pigs so mean and mendacious and treacherous, the sheep so stupid. Synonyms traitorous, disloyal, perfidious, faithless, unfaithful, duplicitous, false-hearted, deceitful, false, untrue, back-stabbing, double-crossing, double-dealing, two-faced, janus-faced, untrustworthy, unreliable, undependable, fickle 1.1 (of ground, water, conditions, etc.) hazardous because of presenting hidden or unpredictable dangers. a vacationer was swept away by treacherous currents Example sentencesExamples I thought that in my years as a reporter I had navigated some fairly treacherous terrain. The views open out to the north-east, across the treacherous Pentland Firth to Orkney, as you reach Portskerra pier. Weather conditions in the area at the time of the incident were described as treacherous by local emergency services. A grieving family has pleaded for action to be taken on a treacherous bend that this week claimed the life of their mother. Some 500,000 vessels a year pass through the treacherous, narrow Bosporus and Dardanelles straits. The road in Tunduffe has now gained such a high level of points that Gardai declare it treacherous and a serious accident risk. I dragged myself up, hanging on to the treacherous railing, and lumbered up the stairs, bruised all over. We made it to the top, but coming down was more treacherous. The earth is rich and dead, and offers treacherous footing. As the treacherous winter months lie ahead, let's not wait for more alarming statistics to bring us to our senses. If the Marina is known for its strong undercurrents, the sand on Elliots Beach is treacherous as it keeps shifting. He parallels the paths of two very different figures, each coming of age and choosing a path in life during a treacherous time. My inertia in not pushing it backwards into a safe zone is as guilty for the shattered glass as the treacherous wind. It resembles a treacherous dungeon, which is strange because one wall is entirely windows. The Garavogue is a fast-flowing treacherous river and we can do without those vandals who steal the ring buoys. The descent is worse, in parts a sheer drop on a thin track almost hidden by heather with treacherous rocks and holes ready to trip up even the most nimble feet. On that day Couples' tee-shot to Golden Bell, the treacherous par three, clung miraculously to the bank of the Creek. Many side roads were treacherous and remained so till Tuesday and several minor accidents occurred as a result. It can be very treacherous and can give way at any time. The women worked the wind-swept fields while the men worked the quarries and manned fishing boats in famously treacherous seas. Synonyms dangerous, hazardous, perilous, unsafe, precarious, risky, deceptive, unreliable, undependable, unstable Origin Middle English (in treacherous (sense 1 of the adjective)): from Old French trecherous, from trecheor ‘a cheat’, from trechier ‘to cheat’.
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