BOOSTER Synonyms: 44 Similar and Opposite Words

booster

noun

ˈbü-stər

Definition of booster

as in proponent

a person who actively supports or favors a cause rah-rah boosters for the sports team will be attending the game and carrying large signs

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of booster Once again, the rocket's lower-stage booster, known as Super Heavy, is due to land off the Gulf Coast after providing the initial burst of thrust to get the upper-stage off the ground. — Eric Lagatta, USA Today, 16 Sep. 2026 These eye-popping sights have now become commonplace; to date, SpaceX has landed boosters more than 650 times during orbital missions. — Mike Wall, Space.com, 16 Sep. 2026 For most teenagers, volunteering is a great résumé booster, but Petraro-Hyppolite doesn't really need another one. — John Dias, CBS News, 16 Sep. 2026 Priced at $40, the 2-in-1 formula is packed with Pro-Vitamin B5 and moisture boosters including jojoba oil and glycerin. — Brittany Talarico, PEOPLE, 15 Sep. 2026 See All Example Sentences for booster

Recent Examples of Synonyms for booster

Noun

For its proponents, a country could not be fully independent while its resources and institutions remained excessively dependent on decisions made elsewhere.

— Andre Pagliarini, The Conversation, 22 Sep. 2026
The committee would reportedly include OMB director and Project 2025 proponent Russell Vought and NIH head Jay Bhattacharya.

— Jackie Flynn Mogensen, Scientific American, 21 Sep. 2026

Definition of proponent

Noun

Nixon embodies that for people, Dunn said, adding that her authenticity also attracts supporters.

— Miami Herald, Miami Herald, 25 Sep. 2026
Finally, supporters of the industry’s decisions contend that employers and venues have legitimate responsibilities to protect audiences and employees from hate speech, regardless of an entertainer’s race or gender.

— Carlos De Loera, Los Angeles Times, 25 Sep. 2026

Definition of supporter

Noun

But advocates for broader vaccine restrictions have promised to renew their push in future legislative sessions.

— Sally C. Pipes, Chicago Tribune, 20 Sep. 2026
The Block the Merger group, which includes 1st Amendment advocates and Hollywood celebrities, including Jane Fonda and Mark Ruffalo, called on Bonta and the 11 other attorneys general to hold out for major concessions.

— Meg James, Los Angeles Times, 19 Sep. 2026

Definition of advocate

Noun

Puth’s representatives and the tour’s promoter have not publicly provided further details about the cancellation.

— Jessica Lynch, Billboard, 19 Sep. 2026
While promoters and venues wield great power over concert tours, experts say an artist of Sheeran's magnitude generally has the final say about what happens concerning the shows.

— ABC News, ABC News, 19 Sep. 2026

Definition of promoter

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boosted

booster

boosters

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“Booster.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/booster. Accessed 27 Sep. 2026.

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Synonyms of booster

noun

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