unctuous

形容词 unctuous:

1. unpleasantly and excessively suave or ingratiating in manner or speech
   同义词：buttery, fulsome, oily, oleaginous, smarmy, soapy

1. He speaks in unctuous tones.
   他说话油腔滑调。
2. He made an unctuous assurance.
   他做了个虚请假意的承诺。