stupid

[stoo-pid, styoo‑]

adjective

stupider, stupidest 

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?

3. tediously boring, especially due to lack of meaning or sense; inane; pointless.

   He wished he'd never come to such a stupid party.

4. annoying or irritating; troublesome.

   Turn off that stupid radio.

5. in a state of stupor; stupefied.

   After a twelve-hour work day, she was stupid from fatigue.

6. Slang.,  excellent; terrific.

noun

1. Informal.,  a stupid person.

stupid

/ ˈstjuːpɪd /

adjective

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

2. (usually postpositive) stunned, dazed, or stupefied

   stupid from lack of sleep

3. having dull mental responses; slow-witted

4. trivial, silly, or frivolous

noun

1. informal,  a stupid person

Confusables Note

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).

Other Word Forms

• stupidly adverb
• stupidness noun
• unstupid adjective
• unstupidly adverb
• unstupidness noun

Word History and Origins

Origin of stupid¹

First recorded in 1535–45; from Latin stupidus, equivalent to stup(ēre) “to be numb, to be stunned” + -idus -id ⁴ ( def. )

Word History and Origins

Origin of stupid¹

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

Synonym Study

See dull.

Example Sentences

The alleged “wisdom of crowds” is so stupid, so often that it seems crazy to suggest that today’s stock market — which is, after all, just “the crowd” chasing money — is the craziest on record.

Read more on MarketWatch

However, he says "we're not stupid" and knows "we have to get better", especially with a trip to Greece and a potential top spot showdown to come at home to Denmark next month.

Read more on BBC

"It sounds like nonsense, but something said to me that if I didn't sign up, I'd be stupid," she said.

Read more on BBC

Sanae Takaichi, the new head of the Liberal Democratic Party, is viewed as being in favor of expansionist economic policies and once called the Bank of Japan’s rate increases “stupid.”

Read more on The Wall Street Journal

Last year, she said it was “stupid” of the Bank of Japan to raise interest rates.

Read more on The Wall Street Journal

Related Words

• dull 
• dumb 
• foolish 
• futile 
• ill-advised 
• irrelevant 
• laughable 
• ludicrous 
• naive 
• senseless 
• shortsighted 
• simple 
• trivial 

When To Use

What are other ways to say stupid?

The adjective stupid describes things characterized or proceeding from mental dullness. Do you know when to use stupid, fatuous, silly, inane, foolish, and asinine? Find out on Thesaurus.com.