agony
noun /ˈæɡəni/
  /ˈæɡəni/
 [uncountable, countable] (plural agonies)
Idioms - extreme physical or mental pain- in agony Jack collapsed in agony on the floor.
- in an agony of something She waited in an agony of suspense.
- It was agony not knowing where the children were.
- The worst agonies of the war were now beginning.
- Tell me now! Don’t prolong the agony (= make it last longer).
- It is inhuman to keep a man facing the agony of execution for so long.
 Extra ExamplesTopics Illnessc1- The soldier died in agony.
- She mumbled an apology in an agony of embarrassment.
- She was causing David a great deal of agony.
- They went through agony in the search for their missing relatives.
- The little creature squirmed in its death agonies.
- He endured agonies of loneliness and misery.
 Oxford Collocations Dictionaryadjective- excruciating
- extreme
- intense
- …
 - endure
- go through
- suffer
- …
 - in agony
- in an agony of
 - a groan of agony
- a scream of agony
- groan in agony
- …
 Word Originlate Middle English (originally denoting mental anguish alone): via Old French and late Latin from Greek agōnia, from agōn ‘contest’. The sense of physical suffering dates from the early 17th cent.
Idioms 
pile on the agony/gloom 
- (especially British English, informal) to make an unpleasant situation worse- Bosses piled on the agony with threats of more job losses.