creep

sense 1: move slowly; in the case of people or animals with the body near the ground; "The crocodile was crawling along the riverbed"
crawl creep

sense 2: to go stealthily or furtively; "..stead of sneaking around spying on the neighbor's house"
sneak mouse creep steal pussyfoot

sense 3: grow in such a way as to cover (a building, for example); of plants such as ivy
grow_over creep

sense 4: show submission or fear
fawn crawl creep cringe cower grovel