English · Slang Attested

ill

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

Meaning · English

To behave aggressively.

Where it’s used: Used American English

D.M.C.: You been illin' lately. Run: So, I'm illin'. Am I illin'? Chillin'! You know what I'm sayin'? Chillin'.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)

Sources & notes

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

Topics: Dated

Common questions

What does “ill” mean?

To behave aggressively.

Is “ill” formal or informal?

ill is generally dated, slang.

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