Definition of wreak verb from the Oxford Advanced American Dictionary

 

wreak

 verb
verb
NAmE//rik//
 
wreak something (on somebody)(formal)Verb Forms present simple I / you / we / they wreak
 
he / she / it wreaks
 
past simple wreaked
 
-ing form wreaking
 
 
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to do great damage or harm to someone or something Their policies would wreak havoc on the economy. He swore to wreak vengeance on those who had betrayed him.
See the Oxford Advanced Learner's Dictionary entry: wreak