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Definition of lightweight

lightweight

/ˈlaɪtˌweɪt/
light · weight

Plural:lightweights
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lightweight Lexical Profile

lightweight Game Scores & Validity

• adjective

1

Of less than average weight; made of thin or light material.

Example

"She packed a lightweight jacket for the cool evening breeze."


2

Lacking seriousness, depth, or intellectual substance; trivial.

Example

"Critics dismissed the summer comedy as a pleasant but lightweight entertainment."

Synonyms
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Antonyms
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• noun

1

A weight class in boxing and other combat sports for competitors of relatively light weight (in professional boxing, typically up to 135 pounds or 61.2 kg), or an athlete who competes in this division.

Example

"The young contender won the regional championship as a lightweight before moving up a division."


2

A person of little importance, influence, or intellectual stature.

Example

"Several party elders viewed the inexperienced candidate as an intellectual lightweight."


3

A person who becomes intoxicated or overwhelmed very easily, especially from a small amount of alcohol (informal).

Example

"He joked that he had become a total lightweight after feeling dizzy from half a glass of wine."

Synonyms
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Antonyms
View all antonyms for lightweight

Word Origin & Etymology

Formed in the early 18th century as a compound of 'light' and 'weight', originally used in horse racing to describe a jockey or horse carrying less than the standard burden before being adopted in boxing.

Cite this Entry


Wordmom. (2026). Definition of Lightweight. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/lightweight
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