of age

Definitions

1. Old enough to be considered an adult (in law, or by society generally).
2. Having existed for a certain period of time; used in referring to a person's age.
   formal, idiomatic, literary, usually

Equivalents

Examples

“He's of age now: he can make⟳ his own⟳ decisions.”

“Once one is of age 16, one's horizons broaden; once on is of age 21 one's horizons are limitless.”

“One must be 18 years (of age) to be an eligible voter in most countries.”

CEFR level