Synonyms and related words :
a stranger to, amateurish, disaccustomed, ignorant, inexperienced, new to, rusty, semiskilled, unaccomplished, unaccustomed, unacquainted with, unbusinesslike, uncoached, unconversant with, unendowed, unfamiliar with, unfinished, ungifted, unhabituated, unhardened, uninitiated, uninured, unpolished, unpracticed, unprepared, unprimed, unprofessional, unschooled, unseasoned, unskilled, untalented, untaught, untutored, unused, unused to, unwonted, weaned