Lose (Lost - past tense)

1. To shed weight; to reduce. I need to lose 20 pounds.
2. To cause (something) to cease to be in one's possession. Do not lose your key.
3. To have (an organ) removed from one's body, especially by accident. He lost his spleen in an auto accident.
4. To fail to win. We lost the football game.
5. To experience the death of someone to whom one has an attachment, such as a relative or friend. She lost her sons in the war.
6. Of a clock, to run slower than expected. My watch loses five minutes a week.
7. To be unable to follow or trace (somebody or something) any longer. The policeman lost the robber he was chasing.
8. To cause (something) to cease to be in one's capability due to unfortunate or unknown circumstances, events or reasons. He lost his hearing in the explosion.