6
fan(noun, advocate, leader, supporter, friend)
6
protagonist
5
backer(noun, advocate, agent, leader, supporter)
5
disciple(noun, supporter, fan, attendant, follower)
5
injection(noun, shot, introduction, vaccination, inoculation)
5
partisan(noun, advocate, supporter, fan, friend)
4
advocate(noun, support, agent, leader, supporter)
4
exponent(noun, support, person, advocate, supporter)
4
fanatic(noun, supporter, fan, attendant, follower)
4
fancier(noun, supporter, fan, follower, partisan)
4
fiend(noun, supporter, fan, attendant, follower)
4
freak(noun, supporter, fan, attendant, follower)
4
hound(noun, supporter, fan, attendant, follower)
4
inoculation(noun, remedy, needle, shot, vaccination)
4
lover(noun, supporter, fan, follower, partisan)
4
nut(noun, supporter, fan, attendant, follower)
4
shot(noun, remedy, vaccination, inoculation, injection)
4
sponsor(noun, advocate, agent, leader, supporter)
4
takeoff booster(noun, expression, idiom)
4
takeoff rocket(noun, expression, idiom)
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APASmart Define. (2015). booster thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/booster/thesaurus/synonyms
ChicagoSmart Define. 2015. "booster thesaurus" https://smartdefine.org/booster/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, booster thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/booster/thesaurus/synonyms>.
MLASmart Define. "booster thesaurus" 24 December 2015. Web. 22 September 2026. <https://smartdefine.org/booster/thesaurus/synonyms>