mutant

/ˈmjuːtənt/

Proposed by a contributor, not yet supported by evidence.

Also seen as: mutants

Sense 1

Meaning · English

That which has mutated, with one or more new characteristics from a mutation.

Noun

Examples

Furthermore, it is possible that there occasionally arises what may be called a mutant of very desirable character from a eugenic point of view.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 2

Meaning · English

Someone or something that seems strange, abnormal, or bizarre.

NounRegister: informal

Examples

Your neighbor seems to be a mutant; he’s so cringy!

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 3

Meaning · English

Of, relating to, undergoing (i.e. mutating), or resulting from change or mutation; that has undergone mutation.

Adjective

Examples

mutant DNA

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 4

Meaning · English

Strange, abnormal, or bizarre.

AdjectiveRegister: informal

Examples

Your mutant brother just growled at me again!

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Common questions

What does “mutant” mean?

That which has mutated, with one or more new characteristics from a mutation.

Is “mutant” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.