Definition of retard verb from the Oxford Advanced Learner's Dictionary

 

retard

 verb
verbVerb Forms present simple I / you / we / they retard
BrE BrE//rɪˈtɑːd//
 
; NAmE NAmE//rɪˈtɑːrd//
 
he / she / it retards
BrE BrE//rɪˈtɑːdz//
 
; NAmE NAmE//rɪˈtɑːrdz//
 
past simple retarded
BrE BrE//ˈtɑːdɪd//
 
; NAmE NAmE//ˈtɑːrdɪd//
 
past participle retarded
BrE BrE//ˈtɑːdɪd//
 
; NAmE NAmE//ˈtɑːrdɪd//
 
-ing form retarding
BrE BrE//rɪˈtɑːdɪŋ//
 
; NAmE NAmE//rɪˈtɑːrdɪŋ//
 
 
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BrE BrE//rɪˈtɑːd//
 
; NAmE NAmE//rɪˈtɑːrd//
 
retard something (formal) to make the development or progress of something slower synonym delay, slow The progression of the disease can be retarded by early surgery. The lack of a rail link retarded the town’s development.
Word Origin late 15th cent.: from French retarder, from Latin retardare, from re- ‘back’ + tardus ‘slow’.

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