Monsters, noun plural of monster. Synonyms in the same form.
Fiend
fiends, demons, ogres, devils, brutes
Monstrosity
monstrosities, freaks, monstrousnesses
Giant
giants, leviathans, goliaths, behemoths, colossuses
Other
beasts, dragons, minotaurs, animals, chimeras, frights, sphinxes, deformities, abortions, terata
All synonyms for monster →