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English definition of “silly”

silly

adjective     /ˈsɪl.i/
B1 showing little thought or judgment: Don't do that, you silly boy! a silly mistake It was silly of you to go out in the sun without a hat. I feel silly (= embarrassed) in this dress. → Synonym foolishStupid and sillyOf unsound mind B1 not important, serious, or practical: She gets upset over such silly things. We were served our drinks in these silly little glasses.
(Definition of silly adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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