losing

1. To cause (something) to cease to be in one's possession or capability due to unfortunate or unknown circumstances, events or reasons.

   He lost his hearing in the explosion.

2. To wander from; to miss, so as not to be able to find; to go astray from.

   I lost my way in the forest.

3. To fail to win (a game, competition, trial, etc).

   We lost the football match.

4. To be unable to follow or trace (somebody or something) any longer.

   Mission control lost the satellite as its signal died down.

5. To cause (somebody) to be unable to follow or trace one any longer.

   We managed to lose our pursuers in the forest.

6. To cease exhibiting; to overcome (a behavior or emotion).
7. To shed, remove, discard, or eliminate.

   When we get into the building, please lose the hat.

8. Of a clock, to run slower than expected.

   It's already 5:30? My watch must have lost a few minutes.

9. (ditransitive) To cause (someone) the loss of something; to deprive of.
10. To fail to catch with the mind or senses; to miss.

    I lost a part of what he said.

11. To cause to part with; to deprive of.

noun

The process by which something is lost; a loss.

1. That loses or has lost.

   Being on the losing team is disappointing.