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Definition of boost

boost

/buːst/
boost

Plural:boosts
•
Past Simple:boosted
•
Past Participle:boosted
•
Present Participle:boosting
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boost Lexical Profile

boost Game Scores & Validity

• noun

1

A source of help, encouragement, or improvement that leads to an increase or advancement.

Example

"Winning the regional scholarship gave her confidence a tremendous boost before college."


2

An upward push or lift given from below to help someone climb or reach something higher.

Example

"The father gave his young son a quick boost so the boy could peer over the garden wall."


3

An increase in mechanical power, engine intake manifold pressure, or electrical voltage beyond normal operating levels.

Example

"The turbocharger provides extra boost at high engine speeds to maximize performance."

Synonyms
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Antonyms
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• verb

1

To help increase, improve, or strengthen the value, amount, or success of something.

Example

"The city launched a cultural festival to boost tourism during the autumn months."


2

To push or lift someone or something upward from below.

Example

"She boosted her younger brother onto the lowest branch of the oak tree."


3

North American To steal or shoplift goods, especially a motor vehicle or retail merchandise (slang).

Example

"The suspect admitted to trying to boost luxury watches from the department store."

Synonyms
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Antonyms
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• Rhymes for boost

Word Origin & Etymology

First attested in early 19th-century American English, possibly related to Scottish and Northern English dialectal 'boist' (meaning to swell or bulge), though its exact phonological evolution remains uncertain.

Cite this Entry


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