schoolboyish
1. [ adjective ] (education) befitting or characteristic of a young boy
Synonyms: boyish boylike
Examples:

"a boyish grin" "schoolboyish pranks"

Related terms: young
Similar spelling:   schoolboy
  schoolbook
  schoolfellow
  schoolbag
  school_phobia
  school_bus
  Schoolfield
  school_bell
  schoolfriend
  school_board