adj.
Pronunciation: ' lo ̇ st
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 \ ' lo ̇ s(t)-n ə s \ noun