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.
© Webster 1913.