unexpected

a.意外的，没想到的

unending, unequal, unequalled, unequally, unequivocal, unequivocally, unerring, unerringly, UNESCO (also Unesco), unessential, unethical, unethically, uneven, unevenly, unevenness, unexamined, unexceptionable, unexceptionably, unexceptional, unexceptionally, unexpectedly, unexpectedness, unexplained, unfading, unfailing, unfailingly, unfair, unfairly, unfairness, unfaithful, unfaithfully, unfaithfulness, unfamiliar, unfamiliarity, unfashionable, unfasten, unfathomable, unfavorable, unfeeling, unfeelingly,