Synonyms and related words :
Bohemian, beat, below the belt, breakaway, far out, foul, free and easy, fringy, heretical, heterodox, hippie, informal, kinky, maverick, not done, not fair, not kosher, offbeat, original, unconventional, unfair, unfashionable, unorthodox, unsporting, unsportsmanlike, unsportsmanly, way out