bootlick
1. [ verb ] tray to gain favor by cringing or flattering
Synonyms: toady truckle kowtow kotow suck_up fawn
Examples:

"He is always kowtowing to his boss"

Related terms: flatter court_favor truckling apple_polisher kowtow sycophant
Similar spelling:   bootlicker
  bootlicking
  bootleg
  botulism
  bootless
  bootlace