Main Entry: lost

Pronunciation: \ˈlȯst\

Function: adjective

Etymology: past participle of lose

Date: 15th century

1 : not made use of, won, or claimed
2 a : no longer possessed b : no longer known
3 : ruined or destroyed physically or morally : desperate
4 a : taken away or beyond reach or attainment : denied <regions lost to the faith> b : insensible, hardened <lost to shame>
5 a : unable to find the way b : no longer visible c : lacking assurance or self-confidence : helpless
6 : rapt, absorbed <lost in reverie>
7 : not appreciated or understood : wasted <their jokes were lost on me>
8 : obscured or overlooked during a process or activity <lost in translation>
9 : hopelessly unattainable : futile <a lost cause>

— lost·ness \ˈlȯs(t)-nəs\ noun