uninitiate

amateur green innocent kid prentice raw rookie tenderfoot young

callow fresh ignorant immature inept inexpert naive new rude sophomoric spring chicken unaccustomed unacquainted unconversant undisciplined unfamiliar with unfledged uninitiated unpracticed unschooled unseasoned unsophisticated untrained untried unused unversed unworldly verdant wet behind ears

experienced old

abecedarian apprentice aspirant beginner dabbler dilettante greenhorn ham hopeful layperson learner neophyte novice probationer putterer recruit tenderfoot tyro

Sunday driver bush leaguer nonprofessional smatterer

expert professional