act one's age
вести себя по взрослому
My niece is in her early thirties, but she prefers not to act her age.
Другие идиомы:
- act high and mighty
- act up
- act of God
- ahead of the pack
- alley cat
- as awkward as a cow on roller skates
- as blind as a bat
- as busy as a beaver
- as clean as a hound's tooth
- as conceited as a barber's cat
- as crooked as a dog's hind leg
- as drunk as a skunk
- as fat as a pig
- as gentle as a lamb
- as gruff as a bear