Wiktionary
untraditional
a. Not traditional, or departing from tradition
WordNet
untraditional
adj. not conforming to or in accord with tradition; "nontraditional designs"; "nontraditional practices" [syn: nontraditional] [ant: traditional]
Usage examples of "untraditional".
But it goes against all tradition, and I think I have done enough untraditional things during my time for me not to wish to do another.
In a real emergency, any means, however untraditional, could be used to punish treachery.
Angela blushed to her toes at his reference to their rather untraditional wedding breakfast.