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

 

exacerbate

 verb
verb
BrE BrE//ɪɡˈzæsəbeɪt//
 
; NAmE NAmE//ɪɡˈzæsərbeɪt//
 
Verb Forms present simple I / you / we / they exacerbate
BrE BrE//ɪɡˈzæsəbeɪt//
 
; NAmE NAmE//ɪɡˈzæsərbeɪt//
 
he / she / it exacerbates
BrE BrE//ɪɡˈzæsəbeɪts//
 
; NAmE NAmE//ɪɡˈzæsərbeɪts//
 
past simple exacerbated
BrE BrE//ɪɡˈzæsəbeɪtɪd//
 
; NAmE NAmE//ɪɡˈzæsərbeɪtɪd//
 
past participle exacerbated
BrE BrE//ɪɡˈzæsəbeɪtɪd//
 
; NAmE NAmE//ɪɡˈzæsərbeɪtɪd//
 
-ing form exacerbating
BrE BrE//ɪɡˈzæsəbeɪtɪŋ//
 
; NAmE NAmE//ɪɡˈzæsərbeɪtɪŋ//
 
Being ill
 
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exacerbate something (formal) to make something worse, especially a disease or problem synonym aggravate His aggressive reaction only exacerbated the situation. The symptoms may be exacerbated by certain drugs. See related entries: Being ill Word Origin mid 17th cent.: from Latin exacerbat- ‘made harsh’, from the verb exacerbare, from ex- (expressing inducement of a state) + acerbus ‘harsh, bitter’. The noun exacerbation (late Middle English) originally meant ‘provocation to anger’.
See the Oxford Advanced American Dictionary entry: exacerbate