Same word as precursive:

apocalyptic, augural, baleful, baneful, clouded, dangerous, dark, dire, direful, dismal, doomed, doomful, fateful, fearful, forbidding, gloomy, grim, haunting, hostile, ill-boding, ill-fated, impending, inauspicious, inhospitable, lowering, malefic, malificent, malign, minatory, perilous, portentous, precursive, premonitory, presaging, prescient, prophetic, sinister, suggestive, threatening, unfriendly, unlucky, unpromising, unpropitious