any nonhuman animal, esp. a large, four-footed mammal.

the crude animal nature common to humans and the lower animals

Hunger brought out the beast in him.

a cruel, coarse, filthy, or otherwise beastlike person.

a live creature, as distinguished from a plant

What manner of beast is this?

the beast, the Antichrist. Rev. 13

18.

noun

barbarian , beastie , creature , critter , fiend , gargoyle , glutton , lower animal , monster , monstrosity , pig , quadruped , swine , varmint , archfiend , devil , ghoul , ogre , tiger , vampire , animal , behemoth , brute , cad , demon , hun , lion , savage