Nouns

(n)kowtow, kotowa former Chinese custom of touching the ground with the forehead as a sign of respect or submission

Verbs

(v)scrape, kowtow, genuflectbend the knees and bow in a servile manner
(v)fawn, toady, truckle, bootlick, kowtow, kotow, suck uptry to gain favor by cringing or flattering“He is always kowtowing to his boss”