Unc·tu·ous a.
1. Of the nature or quality of an unguent or ointment; fatty; oily; greasy. “The unctuous cheese.”
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.
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unctuousness
n : smug self-serving earnestness [syn: fulsomeness, oiliness,
oleaginousness, smarminess, unction]