Synonyms and related words :
amateurish, arcane, cabalistic, impenetrable, inscrutable, mystic, neglected, numinous, semiskilled, unachieved, unattained, unbusinesslike, uncoached, uncompleted, unconsummated, undischarged, undone, unendowed, unexecuted, unfinished, unfulfilled, ungifted, unguessed, uninitiated, unknowable, unperformed, unpolished, unprepared, unprimed, unprofessional, unrealized, unschooled, unskilled, untalented, untaught, untrained, untutored