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English definition of “stupid”

stupid

adjective     /ˈstjuː.pɪd/ US  /ˈstuː-/
B1 silly or unwise; showing poor judgment or little intelligence: She was really stupid to quit her job like that. Whose stupid idea was it to travel at night? He now thinks that retiring early was a stupid thing to do. How could you be so stupid?Stupid and sillyOf unsound mind informal annoying, or causing a problem: Have your stupid book back if it's so important to you. I hate doing this stupid exercise, I just can't get it right.Annoying stupid     noun [as form of address] informal Don't lock it, stupid!Stupid and silly people stupidly     /-li/ adverb Sorry, I stupidly forgot to bring my copy of the report - could I look at yours?Stupid and sillyOf unsound mind
(Definition of stupid adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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