Lost
Old English losian ‘perish, destroy’, also ‘become unable to find’, from los ‘loss’.
wiktionary
From Middle English loste, losede(preterite) and Middle English lost, ilost, ilosed(past participle), from Old English losode(preterite) and Old English losod, ġelosod, equivalent to lose + -t.
etymonline
lost (adj.)
c. 1300; "wasted, ruined, spent in vain," c. 1500; also "no longer to be found, gone astray" (1520s), past-participle adjectives from lose. Meaning "spiritually ruined, inaccessible to good influence" is from 1640s. Related: Lostness.
Of battles, games, etc. in which one has been defeated, 1724; hence Lost Cause in reference to the bid for independence by the southern states of the U.S., first as the title of the 1866 pro-Southern history of the CSA and the rebellion written by Virginia journalist E.A. Pollard (1832-1872). Lost Generation in reference to the youth that came of age when World War I broke is first attested 1926 in Hemingway's "The Sun Also Rises," where he credits it to Gertrude Stein. Lost-and-found as the name of a department where misplaced articles are brought or sought is by 1907.
