retard

1 of 2

verb

re·tard ri-ˈtärd How to pronounce retard (audio)

retarded; retarding; retards

transitive verb

: to delay or impede the development or progress of : to slow up especially by preventing or hindering advance or accomplishment

chemicals to retard the spread of fire

intransitive verb

: to become delayed : to undergo retardation

retarder noun

retard

2 of 2

noun

re·tard

plural retards

ri-ˈtärd

: a holding back or slowing down : retardation

ˈrē-ˌtärd

offensive : a person affected with intellectual disability

ˈrē-ˌtärd

informal + offensive : a foolish or stupid person

retard

verb

as in to slow

to cause to move or proceed at a less rapid pace an herbicide to retard the growth of weeds

Synonyms & Similar Words

Relevance

slow
brake
inhibit
hinder
impede
stop
decelerate
halt
restrain
curb
obstruct
slacken
hamper
handicap
thwart
set back
sabotage
arrest
tie up
check
bottleneck
rein
frustrate
hold back
foil
hobble
constrain
baffle
encumber
hold up

Antonyms & Near Antonyms

accelerate
hasten
hurry
rush
push
encourage
speed (up)
step up
aid
drive
facilitate
spur
urge
stir
quicken
advance
propel
help
forward
further
expedite
ease
goad
dispatch

Synonym Chooser

Some common synonyms of retard are delay, detain, slacken, and slow. While all these words mean "to cause to be late or behind in movement or progress," retard suggests reduction of speed without actual stopping.

language barriers retarded their progress

The meanings of delay and retard largely overlap; however, delay implies a holding back, usually by interference, from completion or arrival.

bad weather delayed our arrival

The words detain and retard can be used in similar contexts, but detain implies a holding back beyond a reasonable or appointed time.

unexpected business had detained her

While in some cases nearly identical to retard, slacken suggests an easing up or relaxing of power or effort.

on hot days runners slacken their pace

Both slow and slacken also imply a reduction of speed, slow often suggesting deliberate intention.

medication slowed the patient's heart rate

单词	retard
释义	retard 1 of 2 verb re·tard ri-ˈtärd retarded; retarding; retards transitive verb : to delay or impede the development or progress of : to slow up especially by preventing or hindering advance or accomplishment chemicals to retard the spread of fire intransitive verb : to become delayed : to undergo retardation retarder noun retard 2 of 2 noun re·tard plural retards 1 ri-ˈtärd : a holding back or slowing down : retardation 2 ˈrē-ˌtärd offensive : a person affected with intellectual disability 3 ˈrē-ˌtärd informal + offensive : a foolish or stupid person Synonyms Verb brake decelerate slacken slow See all Synonyms & Antonyms Example Sentences Verb The chemical will retard the spread of fire. The problems have retarded the progress of the program. Word History Etymology Verb Middle English, from Anglo-French or Latin; Anglo-French retarder, from Latin retardare, from re- + tardus slow First Known Use Verb 15th century, in the meaning defined at transitive sense Noun 1781, in the meaning defined at sense 1 Kids Definition retard verb re·tard ri-ˈtärd retarded; retarding : to slow down : delay Bad weather retarded our progress. Medical Definition retard transitive verb re·tard ri-ˈtärd : to slow up especially by preventing or hindering advance or development retard spoilage retard hair loss retard verb as in to slow to cause to move or proceed at a less rapid pace an herbicide to retard the growth of weeds Synonyms & Similar Words Relevance slow brake inhibit hinder impede stop decelerate halt restrain curb obstruct slacken hamper handicap thwart set back sabotage arrest tie up check bottleneck rein frustrate hold back foil hobble constrain baffle encumber hold up Antonyms & Near Antonyms accelerate hasten hurry rush push encourage speed (up) step up aid drive facilitate spur urge stir quicken advance propel help forward further expedite ease goad dispatch See More Synonym Chooser Some common synonyms of retard are delay, detain, slacken, and slow. While all these words mean "to cause to be late or behind in movement or progress," retard suggests reduction of speed without actual stopping. language barriers retarded their progress The meanings of delay and retard largely overlap; however, delay implies a holding back, usually by interference, from completion or arrival. bad weather delayed our arrival The words detain and retard can be used in similar contexts, but detain implies a holding back beyond a reasonable or appointed time. unexpected business had detained her While in some cases nearly identical to retard, slacken suggests an easing up or relaxing of power or effort. on hot days runners slacken their pace Both slow and slacken also imply a reduction of speed, slow often suggesting deliberate intention. medication slowed the patient's heart rate
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retard

verb

noun

Synonyms

Example Sentences

Word History

Kids Definition

verb

Medical Definition

transitive verb

verb

Synonym Chooser