unless

conj.除非；如果不

unjust, unjustifiable, unjustifiably, unjustly, unkempt, unkind, unkindly, unkindness, unknowing, unknowingly, unknown, unlace, unladen, unlatch, unlawful, unlawfully, unlearn, unlearned, unleash, unleavened, unlettered, unlicensed, unlike, unlikely, unlimited, unlined, unlisted, unliterary, unload, unlock, unlooked-for, unloose, unlovable, unloved, unluckily, unlucky, unmade, unman, unmanageable, unmanly,