adjective

• Of a liquid, semisolid, or other substance: having the nature or properties of an unguent or ointment; greasy, oily.
• Having fat or oil present; fatty, greasy, oily.
• Of an aroma or taste, or a beverage (such as coffee or wine) or food (such as gravy, meat, or sauce): having layers of concentrated, velvety flavour; lush, rich.
• Of soil: soft and sticky.
• (figuratively) Of a person:
• Complacent, self-satisfied, smug.
• Profusely polite, especially in an insincere and unpleasant manner.