What Does It Mean?

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From our dictionary:
unc•tu•ous

(ungk'chOOus),
adj.

1. characterized by excessive piousness or moralistic fervor, esp. in an affected manner; excessively smooth, suave, or smug.
2. of the nature of or characteristic of an unguent or ointment; oily; greasy.
3. having an oily or soapy feel, as certain minerals.