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English definition of “gaga”

gaga

adjective uk   /ˈɡɑː.ɡɑː/ informal us  

gaga adjective (MENTALLY UNCLEAR)

unable to think clearly and make decisions because of old age: My granny's 94 and she's a bit gaga. I know I'm 73 but I haven't gone gaga yet!
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gaga adjective (IN LOVE)

[after verb] having a strong but usually temporary love for someone: She's totally gaga about/over him! Just standing near her makes him go gaga!
(Definition of gaga from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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