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English definition of “flag”

flag

verb [I] (BECOME TIRED)    /flæɡ/ (-gg-)
to become tired , weaker , or less effective : I was starting to flag after the ninth mile . The conversation was flagging.Tired and making tiredBecoming and making less strong
(Definition of flag verb (BECOME TIRED) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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