Unseasonable(a.) Not seasonable; being, done, or occurring out of the proper season; ill-timed; untimely; too early or too late; as, he called at an unseasonable hour; unseasonable advice; unseasonable frosts; unseasonable food.
Thesaurus Entries
ahead of time, anachronistic, antedated, bad, beforehand, behind time, behindhand, dated, deplorable, early, foredated, futile, ill-adapted, ill-advised, ill-assorted, ill-chosen, ill-considered, ill-fitted, ill-matched, ill-seasoned, ill-sorted, ill-suited, ill-timed, impolitic, improper, inadmissible, inadvisable, inapplicable, inapposite, inappropriate, inapt, inauspicious, incongruous, inconvenient, inept, inexpedient, infelicitous, inopportune, intempestive, intrusive, irrelevant, late, mal a propos, maladjusted, malapropos, metachronistic, misdated, misjoined, mismatched, mismated, misplaced, mistimed, off base, out of character, out of date, out of joint, out of keeping, out of line, out of phase, out of place, out of proportion, out of season, out of time, out of tune, overdue, parachronistic, past due, postdated, premature, prochronistic, tardy, too late, too soon, unadapted, unapt, unbecoming, unbefitting, undesirable, undue, unfavorable, unfit, unfitted, unfitting, unfortunate, unhandy, unhappy, unlucky, unmeet, unprofitable, unpropitious, unpunctual, unqualified, unready, unripe, unseemly, unsuitable, unsuited, untimely, untoward, unwise, wrong