[stag-neyt] 
verb (used without object), -nat⋅ed, -nat⋅ing.| 1. | to cease to run or flow, as water, air, etc. |
| 2. | to be or become stale or foul from standing, as a pool of water. |
| 3. | to stop developing, growing, progressing, or advancing: My mind is stagnating from too much TV. |
| 4. | to be or become sluggish and dull: When the leading lady left, the show started to stagnate. |
| 5. | to make stagnant. |
[stag-nuh-tawr-ee, -tohr-ee] , adjective