unlucky

a.不幸的，倒霉的；不吉的，不祥的；使人失望的，令人遗憾的

unlearn, unlearned, unleash, unleavened, unless, unlettered, unlicensed, unlike, unlikely, unlimited, unlined, unlisted, unliterary, unload, unlock, unlooked-for, unloose, unlovable, unloved, unluckily, unmade, unman, unmanageable, unmanly, unmanned, unmannerly, unmarried, unmask, unmatched, unmentionable, unmentionables, unmerchantable, unmindful, unmistakable, unmistakably, unmitigated, unmoved, unmoving, unnatural, unnaturally,