[ stoo-pid, styoo‐ ]
See synonyms for: stupidstupidsstupidlystupidness on

adjective,stu·pid·er, stu·pid·est.
  1. lacking ordinary quickness and keenness of mind; slow-witted.

  2. characterized by or proceeding from mental dullness; foolish; senseless: Sorry for asking a stupid question, but why is the answer four instead of five?

  1. tediously boring, especially due to lack of meaning or sense; inane; pointless: He wished he'd never come to such a stupid party.

  2. annoying or irritating; troublesome: Turn off that stupid radio.

  3. in a state of stupor; stupefied: After a twelve-hour work day, she was stupid from fatigue.

  1. Informal. a stupid person.

Origin of stupid

First recorded in 1535–45; from Latin stupidus, equivalent to stup(ēre) “to be numb, to be stunned” + -idus -id4

confusables note For stupid

Stupid, ignorant, and unintelligent are all used to refer to people or things that seem to show a lack of mental resources. Stupid is the most general and most insulting term, and can describe someone lacking in intelligence, wisdom, prudence, or mental quickness. Unintelligent refers to people or things that are lacking in capacity for learning, reasoning, or understanding. Ignorant, by contrast, generally means lacking in knowledge (not necessarily lacking in intelligence).

synonym study For stupid

1. See dull.

Other words from stupid

  • stu·pid·ly, adverb
  • stu·pid·ness, noun
  • un·stu·pid, adjective
  • un·stu·pid·ly, adverb
  • un·stu·pid·ness, noun

Words that may be confused with stupid Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

British Dictionary definitions for stupid


/ (ˈstjuːpɪd) /

  1. lacking in common sense, perception, or normal intelligence

  2. (usually postpositive) stunned, dazed, or stupefied: stupid from lack of sleep

  1. having dull mental responses; slow-witted

  2. trivial, silly, or frivolous

  1. informal a stupid person

Origin of stupid

C16: from French stupide, from Latin stupidus silly, from stupēre to be amazed

Derived forms of stupid

  • stupidly, adverb
  • stupidness, noun

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