U 68 verbs
unbearable, beunbiased, beunburden o.s./s.o.unchainunclaspuncoilunconscious, be(come)uncorkuncoverundaunted, beundercutunderestimateundergounderground, gounderlieunderlineundermineunderpinunderstandunderstateundertakeundoundressundulateunearthunencumbered, beunfastenunfastened, be(come)unfoldunfortunate, beunfurlunhappy, beunifyuninhabitable, beuniteunleashunloadunlockunmaskunnerveunpackunproductive, beunravelunrollunsanitary, be(come)unscrewunseatunsettleuntangleuntieunwell, beunwrapupholdupliftuprootuprooted, beupseturgeurinateuseused to (be/get)used up, beuseful, beusherusher inusurputilizeutter