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[stoo-pid, styoo‐] /ˈstu pɪd, ˈstyu‐/
adjective, stupider, stupidest.
lacking ordinary quickness and keenness of mind; dull.
characterized by or proceeding from mental dullness; foolish; senseless:
a stupid question.
tediously dull, especially due to lack of meaning or sense; inane; pointless:
a stupid party.
annoying or irritating; troublesome:
Turn off that stupid radio.
in a state of stupor; stupefied:
stupid from fatigue.
Slang. excellent; terrific.
Informal. a stupid person.
Origin of stupid
1535-45; < Latin stupidus = stup(ēre) to be numb or stunned + -idus -id4
Related forms
stupidly, adverb
stupidness, noun
unstupid, adjective
unstupidly, adverb
unstupidness, noun
Can be confused
ignorant, stupid. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for stupid
Contemporary Examples
Historical Examples
  • stupid as they look, they are full of the strangest stories; and what is more, the stories are all true.

    The Physical Life of Woman: Dr. George H Napheys
  • I mean to say, when he sharply rebuked me for clumsiness or cried out "stupid!"

    Ruggles of Red Gap Harry Leon Wilson
  • stupid as I am I think (after what passed between me and her mother) I can guess what she meant.

    The Black Robe Wilkie Collins
  • stupid Harriet caught her, boxed her ears, and tore the post-card into fragments.

  • He turned towards me as if frightened at hearing my footsteps, and said to me, 'stupid meddler, who told you to follow me?'

    Saragossa Benito Prez Galds
British Dictionary definitions for stupid


lacking in common sense, perception, or normal intelligence
(usually postpositive) stunned, dazed, or stupefied: stupid from lack of sleep
having dull mental responses; slow-witted
trivial, silly, or frivolous
(informal) a stupid person
Derived Forms
stupidly, adverb
stupidness, noun
Word Origin
C16: from French stupide, from Latin stupidus silly, from stupēre to be amazed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for stupid

1540s, "mentally slow," from Middle French stupide, from Latin stupidus "amazed, confounded," literally "struck senseless," from stupere "be stunned, amazed, confounded," from PIE *(s)tupe- "hit," from root *(s)teu- (see steep (adj.)).

Native words for this idea include negative compounds with words for "wise" (cf. Old English unwis, unsnotor, ungleaw), also dol (see dull), and dysig (see dizzy). Stupid retained its association with stupor and its overtones of "stunned by surprise, grief, etc." into mid-18c. The difference between stupid and the less opprobrious foolish roughly parallels that of German töricht vs. dumm but does not exist in most European languages.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for stupid


adj,adj phr

Excellent; splendid; cool, rad: That's stupid/ Yep. Cool, mellow and stupid fresh (1980s+ Black)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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