Definition of kiss-ass in US English:

kiss-ass

adjective

North American
vulgar slang
  • Having or showing an obsequious or sycophantic eagerness to please.

    obsequious, servile, subservient, deferential, grovelling, toadying, fawning, flattering, ingratiating, cringing, unctuous, oily, slimy, creeping, crawling, truckling, slavish, bowing and scraping, uriah heepish, gushing
    View synonyms

noun

  • A person who shows an obsequious eagerness to please.

    toady, creep, crawler, fawner, flatterer, flunkey, truckler, groveller, doormat, lickspittle, kowtower, obsequious person, minion, hanger-on, leech, puppet, spaniel, uriah heep
    View synonyms

Pronunciation

kiss-ass

/ˈkis ˌas//ˈkɪs ˌæs/