v.

1. fail to keep or to maintain; cease to have, either physically or in an abstract sense
   
   • She lost her purse when she left it unattended on her seat
2. fail to win
   
   • We lost the battle but we won the war
3. suffer the loss of a person through death or removal
   
   • She lost her husband in the war
   • The couple that wanted to adopt the child lost her when the biological parents claimed her
4. place (something) where one cannot find it again;
   misplace, mislay
   
   • I misplaced my eyeglasses
5. miss from one's possessions; lose sight of
   
   • I've lost my glasses again!
6. allow to go out of sight
   
   • The detective lost the man he was shadowing after he had to stop at a red light
7. fail to make money in a business; make a loss or fail to profit;
   turn a loss
   
   • I lost thousands of dollars on that bad investment!
   • The company turned a loss after the first year
8. fail to get or obtain
   
   • I lost the opportunity to spend a year abroad
9. retreat;
   fall back, drop off, fall behind, recede
10. fail to perceive or to catch with the senses or the mind;
    miss
    
    • I missed that remark
    • She missed his point
    • We lost part of what he said
11. be set at a disadvantage;
    suffer
    
    • This author really suffers in translation