Definition of flub verb from the Oxford Advanced American Dictionary

 

flub

 verb
verb
NAmE//flʌb//
 
[transitive, intransitive]flub (something)(informal)Verb Forms present simple I / you / we / they flub
 
he / she / it flubs
 
past simple flubbed
 
-ing form flubbing
 
 
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to do something badly or make a mistake She flubbed the first line of the song.