missing

1. To fail to hit.

   I missed the target.

2. To fail to achieve or attain.

   to miss an opportunity

3. To avoid; to escape.

   The car just missed hitting a passer-by.

4. To become aware of the loss or absence of; to feel the want or need of, sometimes with regret.

   I miss you! Come home soon!

5. To fail to understand; to have a shortcoming of perception; overlook.

   miss the joke

6. To fail to attend.

   Joe missed the meeting this morning.

7. To be late for something (a means of transportation, a deadline, etc.).

   I missed the plane!

8. To be wanting; to lack something that should be present.

   The car is missing essential features.

9. (said of a card) To fail to help the hand of a player.

   Player A: J7. Player B: Q6. Table: 283. The flop missed both players!

10. To fail to score (a goal).
11. To go wrong; to err.
12. To be absent, deficient, or wanting.

noun

A value that is missing.

1. Not able to be located; gone, misplaced.

   my missing socks

2. Not present when it (they) should be.

   Joe went missing last year.

3. Of an internal combustion engine: running roughly due to an occasional lack of a spark or other irregular fault.