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English definition of “iffy”

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iffy

adjective uk   /ˈɪf.i/ informal us  
not certain or decided: Simon's still kind of iffy about going to Columbia. not completely good, honest, or suitable: The milk smells a bit iffy. I was hoping to go to the park but the weather's looking a bit iffy.
(Definition of iffy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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