unc·tu·ous
adjective/ˈʌŋktʃuəs/
/ˈʌŋktʃuəs/
(formal, disapproving)- friendly or giving praise in a way that is not sincere and that is therefore unpleasant
谄媚的；油滑的；拍马奉迎的 - an unctuous host
油腔滑调的主人
Word Originlate Middle English (in the sense ‘greasy’): from medieval Latin unctuosus, from Latin unctus ‘anointing’, from unguere ‘anoint’. - an unctuous host