Synonyms and related words :
amateurish, incapable, incapable of, incompetent, ineffective, inefficient, inept, inferior, semiskilled, unable, unable to, unaccomplished, unbusinesslike, uncoached, unfinished, unfit, unfitted, ungifted, uninitiated, unpolished, unprepared, unprimed, unprofessional, unqualified, unschooled, unskilled, untalented, untaught, untrained, untutored