The term 'more unctuous' can be defined as having a greasy or oily texture, and is often used to describe food or language that is overly flattering. The crossword solutions for this term are oilier (6 letters), suaver (6 letters), sauver (6 letters), sleeker (7 letters), soapier (7 letters), and GREASIER (8 letters). All of these words refer to something that is more oily or slippery than usual, and can be used to describe a person's behavior or the texture of an object.