booster

noun

ˈbü-stər How to pronounce booster (audio)
Definition of boosternext
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

Synonyms & Similar Words

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Antonyms & Near Antonyms

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 Meanwhile, Jeff Bezos’s Blue Origin has relaunched an orbital booster once, and the rest of the global aerospace industry combined has yet to do so. — Andrew McAfee, Foreign Affairs, 23 Sep. 2026 Its work includes the Mk 135 solid-propellant booster and the missile’s blast-fragmentation warhead. — Sujita Sinha, Interesting Engineering, 23 Sep. 2026 The booster successfully came back down to Earth and splashed down in the Gulf as planned, and all six of Starship's engines powered it into successful orbital insertion. — Eric Lagatta, USA Today, 22 Sep. 2026 Combining certain treatments—like ultrasound and exosome skin boosters—can have a synergistic effect. — Anna Haines, Condé Nast Traveler, 21 Sep. 2026 See All Example Sentences for booster
Recent Examples of Synonyms for booster
  1. proponent
  2. supporter
  3. advocate
  4. advocator
  5. exponent
  6. promoter
Noun
  • But the apps’ creators and proponents argued the apps were simply a way for users to avoid contact with law enforcement and bore little difference in how Apple and Google maps let users alert others to police speed traps.
    — Clare Duffy, CNN Money, 29 Sep. 2026
  • The bulk of the money raised by the proponents of Proposition 40, which would enact a one-time 5% tax on California billionaires’ assets, appears to have been spent on gathering signatures to qualify the measure for the November ballot.
    — Seema Mehta, Los Angeles Times, 28 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
  • As violent crime has declined in the years following the pandemic, domestic homicides were one of the few categories that were on the rise in 2025, sparking calls to action from law enforcement officials and advocates.
    — Caroline Kubzansky, Chicago Tribune, 25 Sep. 2026
  • Einbinder and Sarandon have been among the most vocal advocates for the Palestinian cause amid Israel’s years-long bombardment of Gaza.
    — Ryan Coleman, Entertainment Weekly, 25 Sep. 2026
Definition of advocate
Noun
  • In the leadership and care phase, your role is that of an advocator.
    — Rodney C. Adkins, Forbes.com, 19 May 2026
Definition of advocator
Noun
  • Daniel Munoz, formerly with Glasner at Palace, is a key exponent of this.
    — Jacob Tanswell, New York Times, 14 Sep. 2026
  • Likewise, the coefficients of the terms with prime exponents shape a modular form.
    — Quanta Magazine, Quanta Magazine, 9 Sep. 2026
Definition of exponent
Noun
  • Delevingne, who plays Peter’s fellow promoter, became actual friends with Firstman at parties in LA and describes him as her spirit animal.
    — Rebecca Ford, Vanity Fair, 25 Sep. 2026
  • All shows for the Calvin Harris – Australia Tour 2027 have sold out, say reps promoters Untitled Group, Full Circle, and Live Nation, which are jointly producing the trek.
    — Lars Brandle, Billboard, 25 Sep. 2026
Definition of promoter

Browse Nearby Words

boosted
booster
boosters
See all Nearby Words

Cite this Entry

“Booster.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/booster. Accessed 2 Oct. 2026.

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