English Reference

Word

momentary

Phoneticsmo·men·tary

US/ˈmoʊmənˌtɛɹi/

UK/mˈəʊməntəɹˌi/

Definitions

01lasting a short time

B2 · Upper Intermediate

adj. lasting for only a very short time.

adj. lasting for a brief moment; transient or fleeting in duration.

“There was a momentary silence before the crowd started cheering.”

“The driver experienced a momentary lapse in concentration, which was fortunately corrected before the vehicle drifted out of its lane.”

02short-lived

C1 · Advanced Formal

adj. lasting for a short period rather than being permanent.

adj. ephemeral or relatively short-lived in a broader temporal context.

“His fame was momentary, and people soon forgot his name.”

“The stock market saw a momentary recovery in prices, though analysts warned that the underlying economic indicators remained weak.”

Synonyms

ephemeralshort-lived

Antonyms

Usage

Often used attributively before a noun; frequently paired with nouns like 'silence', 'lapse', 'confusion', or 'distraction'.

Pitfall

He is a momentary person

He is a transient person

Momentary describes the duration of an event or state, not the permanent character or nature of a person.

Real-World Examples

“It was very momentary – very temporary, almost.” In 1988, Broadrick and Green, who grew up on the same estate, started Godflesh.”
The Guardian 3 Sept 2026

Etymology

From Middle English momentare, from Late Latin mōmentārius (“of brief duration”), from mōmentum (“a short time, an instant”). By surface analysis, moment + -ary.

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

Word family

ADJECTIVE

momentary(B2)

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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Occasional
Level
B2 · Upper Intermediate
Updated

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