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ENGLISH · A WORD WITH POSSIBILITIES

boost.

A push from behind or below, as to one who is endeavoring to climb.

5 characters1 syllables approx.English language

Meaning & usage

noun/buːst//bʉst/Northern-Ireland, Scotland

  1. A push from behind or below, as to one who is endeavoring to climb.

  2. Something that helps, or adds power or effectiveness; assistance.

    The controversy gave a boost to the author's sales.

  3. A coordinate transformation that changes velocity.

  4. A positive intake manifold pressure in cars with turbochargers or superchargers.

    uncountable
Where this word comes from

Unknown. The verb is first recorded 1815; the noun, 1825. Compare Scots boost (“to move; drive off; shoo away”), bost, boast (“to threaten; scold”), Middle English boosten, bosten (“to threaten”). Possible doublet of boast.

verb/buːst//bʉst/Northern-Ireland, Scotland

  1. To lift or push from behind (one who is endeavoring to climb); to push up.

    transitive

  2. To help or encourage (something) to increase or improve; to assist in overcoming obstacles.

    broadly · transitive
    This campaign will boost your chances of winning the election.

  3. To steal.

    slang · transitive

  4. To jump-start a vehicle by using cables to connect the battery in a running vehicle to the battery in a vehicle that won't start.

    Canada · transitive

  5. To give a booster shot to.

    transitive

  6. To amplify; to signal boost.

    transitive
Where this word comes from

Unknown. The verb is first recorded 1815; the noun, 1825. Compare Scots boost (“to move; drive off; shoo away”), bost, boast (“to threaten; scold”), Middle English boosten, bosten (“to threaten”). Possible doublet of boast.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.