Unctuous - definition of unctuous by The Free Dictionary
Define unctuous. unctuous synonyms, unctuous pronunciation, unctuous translation, English dictionary definition of unctuous. adj. 1. Excessively ingratiating or insincerely earnest: was annoyed by the unctuous waiter. 2. a. Containing or composed of oil or fat. b. Having the...
Source: tfd.com