act one's age

Verb

idiomatic imperative

Japanese Meaning

年相応に振る舞う / 成熟した行動をとる / 子供っぽい振る舞いを避ける

In professional settings, it's important to act one's age and speak respectfully.

職場では、年相応に振る舞い、敬意を持って話すことが重要です。

Sense（1）

To behave in a manner appropriate to one's age.

Sense（2）

(imperative, originally US) To behave in a mature manner; to avoid being childish.

Act your age and stop fiddling with that pen – you’re showing us up.

acts one's age

（ present singular third-person ）

acting one's age

（ participle present ）

acted one's age

（ participle past ）

acted one's age

（ past ）