A booming semi-city with parks and clever architects, visited by famous pianists and unctuous lecturers, but irritable from a struggle between union labor and the manufacturers’ association, so that in even the gayest of the new houses there was a ceaseless and intimidating heresy-hunt.
The good neighbor charged into the living-room, waving the most unctuous of black kid gloves and delightedly sputtering: "You may well ask how I am!
There are no more uses of "unctuous" in the book.
Show samples from other sources
But she kept her attention on me, unctuously gesturing, and even as he leaned and bucked into her she held out her open hand to me, as if I should take it when I crept my way inside.
Chang-rae Lee -- A Gesture Life
He made no effort to be civil, or his normal unctuous, ingratiating self.