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booster

USBOO-stur/ˈbustɚ/UKBOO-stuh/ˈbuːstə/

Pluralboosters

Verbboosters, boostering, boostered

14 meanings of booster

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  1. 1
    nouncountable
    An extra dose of a vaccine given later to keep your protection strong.

    Like topping off a battery that has slowly lost some of its charge.

    The nurse gave my son his booster before flu season.

    Many people got a booster after their first two shots.

    Note
  2. 2
    nouncountable
    A thing that makes something else stronger, better, or more powerful.

    Like a push from behind that helps you go faster.

    Good news can be a real booster for the whole team.

    The new coach was a booster for player confidence.

    Similarstimulus, tonic, fillip, spur

    Note
  3. 3
    nouncountable
    The bottom part of a rocket that gives the big push needed to lift off the ground.

    Like the big bottom engine that shoves a rocket up before falling away.

    The rocket's booster fell away once it ran out of fuel.

    Engineers checked the booster before the morning launch.

    Note
  4. 4
    nouncountable
    A person who openly supports something or someone and tells others good things about it.

    Like a friend who tells everyone how great your new shop is.

    She became a loud booster for the local library.

    Every team needs a few boosters in the stands.

    Similarsupporter, champion, promoter, advocate, cheerleader

    Oppositecritic, detractor, opponent

    Note
  5. 5
    nounabbreviationellipsis
    Short for booster seat. It means the raised seat that helps a child sit safely in a car.

    Put the toddler in her booster before you start the car.

    We keep a spare booster in the trunk.

    Note
  6. 6
    nouncountable
    A sealed pack of game cards or figures that players buy to expand their collection.

    Like a surprise bag where you don't know which toys are inside.

    He opened a booster hoping for a rare card.

    She bought three boosters at the game store.

    Similarpack

    Note
  7. 7
    nouncountable
    An item in a video game that briefly gives a player extra power or ability.

    Like finding a magic item in a game that makes you faster for a short time.

    Grab the booster to move faster through the level.

    She collected every booster scattered across the map.

    Similarpower-up

    Note
  8. 8
    nouncountable
    A person who belongs to a club that helps raise money for a school or team.

    Like a parent who joins a group to help pay for the team's gear.

    Her dad is a booster for the high school football team.

    The boosters sold tickets to fund new uniforms.

    Similarsupporter, backer, donor

  9. 9
    verbtransitive
    To give someone an extra dose of a vaccine to renew their protection.

    Like pumping a little more air into a tire that has slowly gone soft.

    Doctors plan to booster everyone again before winter.

    The clinic will booster patients who got their shots last year.

    Note
  10. 10
    nouncountable
    A word that makes a statement sound stronger, like 'really' or 'so'.

    Like turning up the volume on what you say.

    Adding a booster like 'totally' makes a compliment sound stronger.

    Teenagers pile on boosters like 'super' and 'really' when they get excited.

    Similarintensifier, amplifier

    Oppositehedge, downtoner

    Note

Practice

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Origin

From the word "boost" plus the ending "-er."