grown up

Definition

An adult person, or the state of having reached physical and emotional maturity. Often used to describe someone who has transitioned from childhood or adolescence and bears adult responsibilities.

Example Usage

My sister finally got her own apartment—she's all grown up now.

Origin

Compound of 'grown' (past participle of grow) and 'up', used colloquially since at least the early 1900s.

Fun Fact

The phrase is often hyphenated as 'grown-up' when used as an adjective, but 'grown up' as two words remains standard in contemporary usage.

Source: Definition backfill (hailey)

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