Akademik

thirty-something
noun
the time of life between 30 and 40
Syn: ↑thirties, ↑mid-thirties
Hypernyms: ↑time of life
Part Holonyms: ↑adulthood, ↑maturity

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thirty-something (forty-something, etc.)
informal an unspecified age between thirty and forty (forty and fifty, etc.)

I'm guessing she's forty-something

of or relating to a person between thirty and forty (forty and fifty, etc.)

this music appeals more to your thirty-something crowd


Useful english dictionary. 2012.