beast

American  

[beest] / bist /

noun

1. any nonhuman animal, especially a large, four-footed mammal.

2. the crude animal nature common to humans and the lower animals.

   Hunger brought out the beast in him.

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

   Synonyms:

   barbarian, monster, ogre, savage, brute, pig, swine, cad

4. a live creature, as distinguished from a plant.

   What manner of beast is this?

5. the beast, the Antichrist.

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beast British  

/ biːst /

noun

1. any animal other than man, esp a large wild quadruped

2. savage nature or characteristics

   the beast in man

3. a brutal, uncivilized, or filthy person

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verb

1. slang:military (tr) to punish or torture (someone) in a manner that involves excessive physical exercise

Usage

What does beast mean? The word beast refers to an animal, especially a big, four-legged mammal. This sense of the word is used in a neutral way to refer to certain members of the animal kingdom, often to distinguish large beasts from smaller creatures, such as birds. This is how the word is used in the phrase beast of burden, referring to an animal that pulls heavy equipment, such as an ox. Similarly, a mammal that hunts other animals can be called a beast of prey. The word creature is often used in a similar way, but beast typically implies a big animal, whereas creature can refer to even very small ones. Another common meaning of the word beast refers to fictional creatures, especially ones that are considered monsters, as in I had a dream I was being chased by a terrible beast. This is how the word is used in the title of the story Beauty and the Beast. Creature can also be used as a synonym for this sense of the word, but it’s more neutral—a fictional being referred to as a creature may be friendly. By contrast, using the word beast often implies that it is monstrous or dangerous in some way—or is at least thought to be. Beast is sometimes used in a figurative way to refer to a cruel and uncivilized nature of a person, as in Desperation brings out the beast in some people. Another figurative use of the word refers to a situation that is going to create trouble or be difficult to deal with, as in The comprehensive final exam is going to be a beast. The word beast is sometimes used to refer to humans in both very negative and very positive ways. Calling a person a beast in a negative way likens them to a monster and implies that they behave in a crude, brutish, or animalistic way. This use of beast can be especially offensive, especially due to likening a person to an animal. The adjective beastly means monstrous, nasty, vile, or cruel. A more recent slang sense of beast is completely positive. Calling someone a beast in this way means they are extremely strong, skilled, or dominant in some activity, such as a sport, as in Tara is a beast on the volleyball court. This sense of the word is used in the slang term beast mode, which refers to an increased (and often temporary) state of exceptionally high performance. Example: I love monster movies—the bigger and more grotesque the beast, the better.

Related Words

See animal.

Other Word Forms

• beastlike
  adjective

Etymology

Origin of beast

First recorded in 1175–1225; Middle English be(e)ste, from Old French beste ( French bête ), from Latin bēstia

Explanation

A beast is an animal — and usually not a gentle or attractive one. You can also call a person a beast when they're behaving in a crude, savage, or horrible way. There are many types of beast in the world: dogs, cats, horses, monkeys, birds, and fish are all beasts. Even tiny critters like bugs are beasts. A beast is basically any living thing, except for plants, because plants can't intentionally move. People can be called beasts too when they behave in a beastly way. A criminal is likely to be called a beast. So is a rude person. Anyone acting in an uncivilized or cruel way is being a beast.

Example Sentences

Beast Industries, the corporate home of MrBeast, held its own invitation-only breakfast for marketing executives at a high-end New York venue .

From Los Angeles Times • May 16, 2026

Still, AI fears are making the Beast of Redmond, as Microsoft is sometimes called, look a little less fearsome.

From Barron's • May 15, 2026

When we talked to the Beast team about being on Beast Games, they had this concept of putting a Starbucks on the set.

From The Wall Street Journal • Apr. 27, 2026

A Beast Industries representative also told US entertainment website Variety Mavromantis' firing was not linked to performance.

From BBC • Apr. 23, 2026

In the distance I hear the growl of The Beast.

From "Beast Rider" by Tony Johnston & María Elena Fontanot de Rhoads

Related Words

• brute
• cad
• ogre
• ogress