Premature1. (a.) Happening too soon; mature or ripe before the proper time; as, the premature fruits of a hotbed.
2. (a.) Happening, arriving, existing, or performed before the proper or usual time; adopted too soon; too early; untimely; as, a premature fall of snow; a premature birth; a premature opinion; premature decay.
3. (a.) Arriving or received without due authentication or evidence; as, a premature report.
Thesaurus Entries
a bit previous, advanced, beforehand, early, far ahead, forward, green, half-baked, half-cocked, hasty, ill-considered, ill-seasoned, ill-timed, immature, improper, impulsive, inappropriate, inauspicious, inconvenient, inexpedient, infelicitous, inopportune, intempestive, intrusive, irrelevant, late, mal a propos, malapropos, mistimed, not firm, off base, out of line, out of phase, out of time, overhasty, oversoon, precipitate, precocious, previous, rushed, soon, too early, too late, too soon, unbefitting, uncrystallized, underdeveloped, undeveloped, unfavorable, unfit, unfitting, unfledged, unfortunate, unhandy, unhappy, unjelled, unlucky, unmatured, unmeditated, unpremeditated, unprepared, unpropitious, unready, unripe, unseasonable, unsuitable, untimely, untoward, wrong