Unctuous \Unc"tu*ous\ (?; 135), a. [F. onctueux, LL. unctuosus, fr. L. unctus anointment, fr. ungere, unctum, to anoint. See {Unguent}.] 1. Of the nature or quality of an unguent or ointment; fatty; oily; greasy. ``The unctuous cheese.'' --Longfellow. 2. Having a smooth, greasy feel, as certain minerals. 3. Bland; suave; also, tender; fervid; as, an unctuous speech; sometimes, insincerely suave or fervid. -- {Unc"tu*ous*ly}, adv. -- {Unc"tu*ous*ness}, n. web1913
unctuous adj : unpleasantly and excessively suave or ingratiating in manner or speech; "buttery praise"; "gave him a fulsome introduction"; "an oily sycophantic press agent"; "oleaginous hypocrisy"; "smarmy self-importance"; "the unctuous Uriah Heep" [syn: {buttery}, {fulsome}, {oily}, {oleaginous}, {smarmy}] wn