English Reference

Word

vigorous

Phoneticsvig·or·ous, stress on the first syllable

US/ˈvɪɡɝəs/

UK/vˈɪɡəɹəs/

Definitions

01energetic and forceful

B2 · Upper Intermediate

adj. done with a lot of energy, speed, or physical strength.

adj. characterized by or involving great physical energy, force, or effort.

“He gave the rug a vigorous shake to get all the dust out.”

“The doctor recommended at least thirty minutes of vigorous exercise daily to improve cardiovascular health and overall stamina.”

02strong and healthy

B2 · Upper Intermediate

adj. strong, healthy, and full of life.

adj. possessing physical or mental vitality; robust and flourishing.

“The young plants looked vigorous and green after the heavy rain.”

“Despite his advanced age, the professor remained a vigorous debater who could outlast colleagues half his age in academic arguments.”

Synonyms

Antonyms

03determined or intense

B2 · Upper Intermediate Academic

adj. showing strong feelings or a lot of effort to achieve something.

adj. characterized by forceful expression or intense determination.

“The company mounted a vigorous defense against the new regulations.”

“The proposal met with vigorous opposition from local residents who were concerned about the environmental impact of the new highway.”

Antonyms

half-heartedindifferent

Real-World Examples

“Online spaces, and social media in particular, are forums for vigorous political debate.”
Phys.org 21 Aug 2026
“Women, it claimed, preferred brushes with a softer touch; men liked something more vigorous “as you might expect”.”
The Guardian 22 Sept 2026

Etymology

From Anglo-Norman vigrus, from Old French vigoros (French vigoureux), from Medieval Latin vigorosus, from Latin vigor. Doublet of vigoroso.

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

Word family

ADJECTIVE

vigorous(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
Frequent
Level
B2 · Upper Intermediate
Updated

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English Reference