(adjective) fatty oily / (adjective) smooth and greasy in texture or appearance / (adjective) plastic / (adjective) full of unction / (adjective) revealing or marked by a smug, ingratiating, and false earnestness or spirituality
Austria's unctuous burial of its thoroughly Nazi past
Atheists accept extreme unction.
perhaps there was some elegant subtlety to the gesture, as if it were true class to pretend their unctuous host was on equal footing
Neither armed struggle nor unctuous petitions dampened the confidence of colonialism.
Michael Palin as an unctuous Anglican vicar in the Monty Python film, ‘The Meaning of Life’.
The unctuous voice, the complacent gesture, made Billy Doud seem asinine.
so intent were the unctuous commentators on concealing the fact that they had bugger-all to say
Her voice was so unctuous that for a second I thought she was affecting it to mock him. Then I saw her false, pleading smile.
All these facts, even the crimes, are sources of unctuous pride for South Asians, both in America and the mother countries