adjective. Characteristic of or befitting a boy.

Belonging to a boy; pertaining to boyhood; in a disparaging sense, childish, trifling, puerile: as, “a boyish odd conceit,”

Synonyms

adjective. Resembling a boy in a manners or opinions; belonging to a boy; childish; trifling; puerile.

adjective. Like a boy.

adjective. befitting or characteristic of a young boy

"_not_ chew gum, but she whistled, and the teachers who reproved her most for what they called a boyish trick, always listened intently, when the clear, musical notes, now soft and low, now loud and shrill, were heard outside, or in the building."

immature  young  

childish  eager  feminine  frank  girlish  

adolescent  airy  attenuate  attenuated  beardless