BOYISH

[adjective]Behaviour or characteristics that are boyish are like those of a boy.a boyish grinShe had her hair cut in a boyish style.Her father is a shy, boyish-looking man in his early fifties.Even as an old man he retained his boyish charm.He's full of boyish enthusiasm for the project.He had a beardless boyish face, fair hair and bright blue eyes.She found his boyish good looks very attractive.