creeping

1. To move slowly with the abdomen close to the ground.
2. Of plants, to grow across a surface rather than upwards.
3. To move slowly and quietly in a particular direction.
4. To make small gradual changes, usually in a particular direction.
5. To move in a stealthy or secret manner; to move imperceptibly or clandestinely; to steal in; to insinuate itself or oneself.
6. To slip, or to become slightly displaced.
7. To move or behave with servility or exaggerated humility; to fawn.
8. To have a sensation as of insects creeping on the skin of the body; to crawl.
9. To drag in deep water with creepers, as for recovering a submarine cable.
10. To covertly have sex (with a person other than one's primary partner); to cheat with.

noun

The act of something that creeps.