English Reference

Word

sluggish

Phoneticsslug·gish, stress on the first syllable

US/ˈsɫəɡɪʃ/

UK/slˈʌɡɪʃ/

Definition

adj. moving or reacting more slowly than usual. You use this when you feel tired or when a system, like a computer or the economy, is not working fast.

adj. characterised by a lack of energy, speed, or alertness. Often describes physical states, economic performance, or mechanical systems.

Examples

“I feel a bit sluggish after that heavy lunch.”

“The technician investigated why the server was sluggish during peak hours.”

“Economists expressed concern over the sluggish growth in the manufacturing sector, which has failed to recover despite significant government intervention.”

Examples

simple

“I feel a bit sluggish after that heavy lunch.”

contextual

“The technician investigated why the server was sluggish during peak hours.”

complex

“Economists expressed concern over the sluggish growth in the manufacturing sector, which has failed to recover despite significant government intervention.”

Usage

Often used predicatively after linking verbs like 'feel', 'become', or 'remain'.

Real-World Examples

“Liam Cullen, now of third-tier Leicester, pinched the ball from Sander Berge after the Fulham ­midfielder was sluggish to claim Fredrik Aursnes’s pass and Wales raced away from the scene.”
The Guardian 1 Oct 2026
“Given the sluggish nature of the EU economy, we shouldn’t expect those figures to start soaring.”
Toronto Sun 14 Sept 2026

Etymology

From slug + -ish.

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

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