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English definition of “folly”


noun [C or U] (STUPIDITY)    /ˈfɒl.i/ US  /ˈfɑː.li/ formal
the fact of being stupid , or a stupid action , idea , etc.: She said that the idea was folly. [+ to infinitive] It would be folly for the country to become involved in the war .Stupid and silly behaviour
(Definition of folly noun (STUPIDITY) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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