English Reference

Word

stupid

US/ˈstupəd/

UK/stjˈuːpɪd/

Definitions

01not intelligent

A2 · Elementary

adj. lacking intelligence or common sense.

adj. lacking intelligence, common sense, or the ability to reason effectively.

“I made a stupid mistake and forgot my keys in the car.”

“The decision to ignore the safety warnings was incredibly stupid and led to a series of avoidable accidents.”

Pitfall

It was a stupid of me to forget.

It was stupid of me to forget.

Do not use 'a' before 'stupid' when it is an adjective describing a person's action.

Synonyms

02annoying or boring

B1 · Intermediate Informal

adj. used to describe something that is annoying, boring, or pointless.

adj. used as a mild pejorative to describe something perceived as tedious, irritating, or lacking merit.

“I can't get this stupid computer to work properly.”

“He spent the entire afternoon filling out stupid paperwork that nobody was ever going to read.”

03amazing

C1 · Advanced Slang

adj. used in slang to mean very good or amazing.

adj. used as a contronym in specific urban dialects to mean excellent or impressive.

“That new car he bought is just stupid.”

“The production quality on her latest album is stupid, setting a new bar for the genre.”

Antonyms

04a foolish person

B2 · Upper Intermediate Countable noun Informal

n. a person who is not smart.

n. a person who lacks intelligence or acts in a foolish manner.

“Don't be such a stupid; listen to what I am telling you.”

“The film features a lovable stupid who somehow manages to save the day despite his constant blunders.”

Synonyms

Antonyms

05extremely

C1 · Advanced Slang

adv. used to mean 'very' or 'extremely'.

adv. functioning as an intensifier to emphasize the degree of an adjective.

“The weather today is stupid hot.”

“The tickets for the concert were stupid expensive, but we decided to go anyway.”

Etymology

From Middle French stupide, from Latin stupidus (“struck senseless, amazed”), from stupeō (“be amazed or confounded, be struck senseless”), from Proto-Indo-European (s)tup-, (s)tewp- (“to push, stick”), from Proto-Indo-European *(s)tew- (“to push, hit”). Cognate with Old High German stubarōn (“to be astonished, be stunned, be blocked”). Related also to Old English stoppian (“to block, stop”). More at stop.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADJECTIVE

stupid(A2)

Related words

Idioms

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A2 KeyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.3.0–4.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 2.0–2.524–43TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.225–549
Frequency
Very common
Level
A2 · ElementaryOxford
Updated

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