Fr.: échouer, faillir
1) To be unsuccessful in achieving something expected, attempted,
M.E. failen, from O.Fr. falir "be lacking, miss, not succeed; come to an end; make a mistake; be dying," from Vulgar L. *fallire, from L. fallere "to trip, cause to fall;" figuratively "to deceive, trick, dupe, cheat; fail, be lacking or defective."
Qâvidan, from Choresmian γaw "to fail, to commit
a fault;" cf. Av. gau- "to commit a sin;" Parthian
(+*fra-) pargaw- "to owe, to lack;"
Ossetian qaewyn/qyd "to be in need of something, to lack;"
Proto-Ir. *gaHu- "to be faulty, wanting; to need;"
Fr.: échec, défaillance
1) An act or instance of failing; lack of success.
Verbal noun from → fail.