English Reference

Word

repellent

Phoneticsre·pel·lent, stress on the second syllable

US/ɹɪˈpɛɫənt/

UK/ɹɪpˈɛlənt/

Countable & uncountable

Definition

n. a substance that keeps something away from you. In physics, it is a force that pushes two things apart instead of pulling them together.

n. a substance or force that causes a physical or chemical reaction to drive something away. In physics, it refers to a force that acts to increase the distance between two objects.

Examples

“The strong smell of the insect repellent keeps the bugs away.”

“The chemical used as a mosquito repellent contains a substance that insects find unpleasant and avoid.”

Examples

simple

“The strong smell of the insect repellent keeps the bugs away.”

contextual

“The chemical used as a mosquito repellent contains a substance that insects find unpleasant and avoid.”

Real-World Examples

“During periods of drought, ground can become very hard and compacted, which can make it more water repellent and increase run off.”
BBC News 18 Aug 2026
“It is quite the story – equally repellent and engrossing – but how should it be told?”
The Guardian 13 Aug 2026

Etymology

From Latin repellēns. Equivalent to repel + -ent.

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

Word family

NOUN

repellent(C2)

ADJECTIVE

Domain

Physics

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.C2 ProficiencyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.8.5–9.0TOEFL 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: 6.0114–120
Frequency
Occasional
Level
C2 · Proficiency
Updated

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English Reference