Pronunciation: (ungk'chOO-us), [key]
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.