fail

vi.失败；衰退 vt.使失望；使不及格

factotum, factual, factually, faculty, fad, faddiness, faddish, faddy, fade, fade-in, fade-out, faded, faecal (US fecal), faeces (US feces), fag, fag-end, faggot (US fagot), fah, Fahrenheit, faience, fail in, fail to, fail-safe, failing, failure, faint, faint-hearted, faint-heartedly, faint-heartedness, fainthearted, faintly, faintness, fair, fair copy, fair play, fair-haired, fair-minded, fair-to-middling, fair-weather friend, fairground,