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adjective stu·pid \ˈstü-pəd, ˈstyü-\

Simple Definition of stupid

  • : not intelligent : having or showing a lack of ability to learn and understand things

  • : not sensible or logical

  • : not able to think normally because you are drunk, tired, etc.

Source: Merriam-Webster's Learner's Dictionary

Full Definition of stupid

  1. 1a :  slow of mind :  obtuseb :  given to unintelligent decisions or acts :  acting in an unintelligent or careless mannerc :  lacking intelligence or reason :  brutish

  2. 2 :  dulled in feeling or sensation :  torpid <still stupid from the sedative>

  3. 3 :  marked by or resulting from unreasoned thinking or acting :  senseless <a stupid decision>

  4. 4a :  lacking interest or point <a stupid event>b :  vexatious, exasperating <the stupid car won't start>

stupidly adverb
stupidness noun

Examples of stupid in a sentence

  1. She angrily described her boss as a stupid old man.

  2. He had a stupid expression on his face.

  3. I'm not stupid enough to fall for that trick.

  4. Why are you being so stupid?

  5. It was stupid of me to try to hide this from you.

  6. We were stupid to wait so long before we made a decision.

  7. I did some pretty stupid things when I was young.

  8. Two glasses of wine are enough to make me stupid.

  9. I was stupid with fatigue.

Origin of stupid

Middle French stupide, from Latin stupidus, from stupēre to be numb, be astonished — more at type

First Known Use: 1541

Synonym Discussion of stupid

stupid, dull, dense, crass, dumb mean lacking in power to absorb ideas or impressions. stupid implies a slow-witted or dazed state of mind that may be either congenital or temporary <stupid students just keeping the seats warm> <stupid with drink>. dull suggests a slow or sluggish mind such as results from disease, depression, or shock <monotonous work that leaves the mind dull>. dense implies a thickheaded imperviousness to ideas <too dense to take a hint>. crass suggests a grossness of mind precluding discrimination or delicacy <a crass, materialistic people>. dumb applies to an exasperating obtuseness or lack of comprehension <too dumb to figure out what's going on>.

Rhymes with stupid



noun stu·pid

Definition of stupid

  1. :  a stupid person

Examples of stupid in a sentence

  1. <a genius at math, but a total stupid when it came to his love life>


First Known Use of stupid


STUPID Defined for Kids


adjective stu·pid \ˈstü-pəd, ˈstyü-\

Definition of stupid for Students


  1. 1 :  not intelligent :  slow in understanding

  2. 2 :  not sensible :  foolish <a stupid mistake>

  3. 3 :  not interesting or worthwhile <a stupid plot>

stupidly adverb

Seen and Heard

What made you want to look up stupid? Please tell us where you read or heard it (including the quote, if possible).


tending to dismiss important matters

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