up-

pref 前缀 (with ns, vs and their related forms 与名词、 动词及其相关形式结合) higher 更高: upheaval * upland * upgrade.

unwisely, unwitting, unwittingly, unwonted, unworkable, unworldliness, unworldly, unworthily, unworthiness, unworthy, unwound, unwritten, unyielding, up, up and doing, up and down, up in arms, up to, up to date, up to time, up-and-coming, up-country, up-end, up-market, up-to-date, up-to-the-minute, upbeat, upbraid, upbringing, upcreep, update, updating, upgrade, upheaval, uphill, uphold, upholder, upholster, upholsterer, upholstery,