Smarmy is a term used to describe someone who is excessively flattering or ingratiating in an insincere way. It is often used to describe someone who is trying to gain favor by being overly complimentary. Flattering is the act of making someone feel good about themselves by giving them compliments or praise. When combined, the term 'smugly flattering' describes someone who is excessively flattering in an insincere and self-satisfied manner.