2
grand(famous, distinguished, renowned)
2
great(adjective, amazing, prominent, huge, distinguished)
2
grown up(noun, adult)
2
hulk(noun, mountain, giant, mammoth, titan)
2
illusion(noun, fancy, fantasy, dream, ghost)
2
illustrious(adjective, great, informal, famous, prominent)
2
imp(noun, evil, villain, brute, demon)
2
lump
2
mad dog
2
mass
2
merman
2
mooncalf(noun, freak)
2
rarity(noun, wonder, genius, whiz, unconformity)
2
swine(noun, animal, creature, bully, beast)
2
teratism
2
tyrant(noun, evildoer)
2
vasty
2
viper(noun, bad man, evildoer)
1
pythonic(adjective, informal, big, giant)
1
amplitudinous
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APASmart Define. (2016). monster thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/monster/thesaurus/synonyms
ChicagoSmart Define. 2016. "monster thesaurus" https://smartdefine.org/monster/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, monster thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/monster/thesaurus/synonyms>.
MLASmart Define. "monster thesaurus" 3 April 2016. Web. 23 September 2026. <https://smartdefine.org/monster/thesaurus/synonyms>