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English definition of “flake”

flake

noun [C] (PERSON)    /fleɪk/ US informal
a person who you cannot trust to remember things or to do what they say they will do, or someone who behaves in a strange wayOf unsound mindStupid and silly
(Definition of flake noun (PERSON) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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