boy ‧ ish /ˈbɔɪ-ɪʃ/ BrE AmE adjective
someone who is boyish looks or behaves like a boy in a way that is attractive ⇨ girlish :
boyish good looks
At 45, she still had a trim boyish figure.
—boyishly adverb :
boyishly handsome
—boyishness noun [uncountable]