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English definition of “go to someone’s head”

go to someone’s head

to damage or weaken your judgment: The climate can go to your head. goes to your head If success goes to your head, it makes you believe that you are more successful or powerful than you really are: Don’t let one win go to your head – you still have at least three more games to play.
(Definition of go to someone’s head from the Cambridge Academic Content Dictionary © Cambridge University Press)
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