Unpropitious

Adjective

 * 1) not propitious; unfavourable, untimely

Thesaurus
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

Etymology
From un- + propitious

Derived terms

 * unpropitiously
 * unpropitiousness