grovel
/ˈgrɑːvəl/ /ˈgrʌvəl/
verb
grovels; US groveled or Brit grovelled; US groveling or Brit grovelling
[no obj]
to kneel, lie, or crawl on the ground
to treat someone with too much respect or fear in a way that shows weakness in order to be forgiven or to gain approval or favor