List of unpropitious synonyms and unpropitious related words.
adversary, adversative, adverse, alien, antagonistic, anti, antipathetic, antithetic, apocalyptic, bad, baleful, baneful, black, bodeful, boding, clashing, competitive, con, conflicting, contradictory, contrary, counter, cross, dark, dire, disaccordant, dissentient, doomful, dreary, enemy, evil, evil-starred, fateful, foreboding, fractious, gloomy, hostile, ill, ill-boding, ill-considered, ill-fated, ill-omened, ill-seasoned, ill-starred, ill-timed, improper, inappropriate, inauspicious, inconvenient, inexpedient, infelicitous, inimical, inopportune, intempestive, intrusive, irrelevant, late, lowering, mal a propos, malapropos, menacing, mistimed, negative, noncooperative, obstinate, of evil portent, off base, ominous, opponent, opposed, opposing, opposite, oppositional, oppositive, oppugnant, out of line, out of phase, out of time, overthwart, perverse, portending, portentous, premature, recalcitrant, refractory, repugnant, rival, sinister, somber, threatening, too late, too soon, unbefitting, uncooperative, unfavorable, unfit, unfitting, unfortunate, unfriendly, unhandy, unhappy, unlucky, unpromising, unready, unripe, unseasonable, unsuitable, untimely, untoward, wrong