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Definition of crackbrained adjective from the Oxford Advanced Learner's Dictionary

crackbrained

adjective
 
/ˈkrækbreɪnd/
 
/ˈkrækbreɪnd/
(informal)
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  1. crazy and unlikely to succeed
    • a crackbrained idea
    Topics Difficulty and failurec2
See crackbrained in the Oxford Advanced American Dictionary
previously
adverb
 
 
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