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adjective

hefty

/ˈhɛfti/  ·  say it: HEF·tee

large, heavy, and powerful

In Describing & Comparing

In more detail

1. (adjective) large in size, amount, or weight

2. (adjective) requiring considerable effort or strength

Examples

How to use hefty

Hefty is an informal but widely used adjective that emphasizes both physical size and the impact or significance of something, often with a tone of mild complaint or emphasis. It typically describes something substantial that makes demands on resources, effort, or capacity, and is more conversational than formal synonyms like 'substantial' or 'considerable.' The word carries an undertone that whatever is hefty is somewhat burdensome or noteworthy.

Register: informal

Common phrases

Synonyms

substantial · considerable · weighty · bulky · massive

Opposites

slight · light · small

Word family

heft (noun, verb) · heftily (adverb) · heftiness (noun)

A common mistake

Learners sometimes use hefty only for physical weight or size, overlooking that it equally applies to abstract quantities like prices, fines, or workloads.

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