English · Slang Attested

diabolical

In real, traceable use. Part of the curated seed collection; community review is coming.

Sense 1

Meaning · English

(Devilishly) cunning or devious.

Where it’s used: Used American English

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Meaning · English

Crazy, wild (sometimes especially due to being unexpected or surprising).

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

What does “diabolical” mean?

(Devilishly) cunning or devious.

Is “diabolical” formal or informal?

diabolical is generally slang.

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