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noun Uncommon

lightweight

LYT-wayt

Lightweight (noun) means a boxing (or similar combat sport) weight class between welterweight and featherweight, or a competitor in it. Example: “He won the world title in the lightweight division.”

noun
1
A boxing (or similar combat sport) weight class between welterweight and featherweight, or a competitor in it.
"He won the world title in the lightweight division."
2
Someone or something of little importance, ability, or influence.
"The critics dismissed him as a political lightweight."
3
Informal: a person who gets drunk very easily, or who has little stamina.
"Two beers in and he was already stumbling — total lightweight."
adj
1
Weighing less than average, or simple and low-impact rather than heavy-duty.
"The app is a lightweight alternative to the bulky desktop version."
"She packed a lightweight jacket for the trip."
2
Lacking seriousness, depth, or substance.
"The interview was fun but pretty lightweight — no hard questions at all."

How to use lightweight

Learner’s notes

In plain EnglishSomething (or someone) with little weight, seriousness, or staying power — used for boxing classes, low-key software, or a person who can't hold their drink.

Common mistake

Context decides the meaning: a "lightweight laptop" is a compliment, but calling a person "a lightweight" (no drink or stamina) is a gentle jab.

Common pairings
lightweight champion lightweight design a bit of a lightweight

Word forms

more lightweight comparative, lighterweight comparative, lightweighted past tense, lightweights plural, lightweights singular, most lightweight superlative, lightestweight superlative

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He won the world title in the _____ division.

Etymology

From light (not heavy) plus weight.

Related words

Rhymes for lightweight

See all rhymes for lightweight →

Frequently asked questions

What does “lightweight” mean?

The word “lightweight” means a boxing (or similar combat sport) weight class between welterweight and featherweight, or a competitor in it. In plain terms, something (or someone) with little weight, seriousness, or staying power — used for boxing classes, low-key software, or a person who can't hold their drink.

How do you pronounce “lightweight”?

“Lightweight” is pronounced LYT-wayt (/ˈlaɪt.weɪt/ in IPA).

How do you use “lightweight” in a sentence?

Here is “lightweight” used in a sentence: “He won the world title in the lightweight division.”

What part of speech is “lightweight”?

Depending on how it is used, “lightweight” can be a noun and an adjective.

Is “lightweight” a common word?

“Lightweight” is an uncommon word in modern English.

How many meanings does “lightweight” have?

“Lightweight” has 5 distinct senses listed in this dictionary. The most common is: a boxing (or similar combat sport) weight class between welterweight and featherweight, or a competitor in it.

What is the difference between "lightweight" and "welterweight" in boxing?

"Lightweight" is a specific boxing weight class that sits between welterweight and featherweight, meaning lightweight boxers weigh less than welterweights but more than featherweights. Each class defines a maximum weight limit for fair competition.

What does it mean to call someone a "lightweight" informally?

Informally, calling someone a "lightweight" can mean they get drunk very easily or have little stamina for a task. It can also mean someone is of little importance or influence in a given field.

What is the difference between "lightweight" and "heavy-duty" as adjectives?

"Lightweight" describes something that weighs less than average or is simple and low-impact, while "heavy-duty" describes something built to withstand hard, demanding use. The two are near-opposites when applied to equipment or materials.

Is "lightweight" always a criticism when describing a person?

Not necessarily — as an adjective it can neutrally describe something simple or low-impact, but as a noun applied to a person it often carries a negative connotation, suggesting they lack seriousness, ability, or influence.

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Definitions: FreeDict original editorial