stupidity

noun

stu·​pid·​i·​ty stu̇-ˈpi-də-tē 

styu̇-

plural stupidities

1

: the quality or state of being stupid

2

: a stupid idea or act

Synonyms of stupidity

• stupidness
• thickness
• dumbness
• obtuseness
• foolishness
• slowness
• dullness
• mindlessness
• insanity
• boneheadedness
• density
• oafishness

Examples of stupidity in a Sentence

I was shocked by the stupidity of their decision.

the stupidity of the dialogue between the two romantic leads had movie audiences giggling uncontrollably

Recent Examples on the Web

That’s only made worse by the fact that it’s treated as some kind of grand betrayal rather than an impulsive act of youthful stupidity that will make for a good story one day. — David Ehrlich, IndieWire, 29 July 2026

Condor, Newton and Hiraga do their best to make Max’s actions believable, but her stubborn stupidity eventually requires more suspension of belief than a highly vindictive shark prowling a freshwater cave right next to the ocean. — Culture Critic, Los Angeles Times, 29 July 2026

The stupidity and greed of the status quo threatens to drive her insane. — Literary Hub, 21 July 2026

His eventual dismissal in second-half stoppage time was an exercise in rash stupidity, crashing through Spain’s teenage center back Pau Cubarsi. — Adam Crafton, New York Times, 20 July 2026

Word History

First Known Use

circa 1541, in the meaning defined at sense 1

Rhymes for stupidity

• acidity
• aridity
• avidity
• cupidity
• fluidity
• humidity
• liquidity
• lucidity
• morbidity
• placidity
• rancidity
• rapidity

Kids Definition

stupidity

noun

stu·​pid·​i·​ty st(y)u̇-ˈpid-ət-ē 

plural stupidities

1

: the quality or state of being stupid

2

: something (as an idea or act) that is stupid