Illicit romance is a term used to describe a romantic relationship that is not socially accepted or is considered taboo. The two crossword solutions for this term are LIAISON (7 letters) and AFFAIR (6 letters). A LIAISON is a relationship between two people, usually of the opposite sex, that is not officially recognized or sanctioned by either party's family or society. An AFFAIR is a romantic relationship between two people, usually of the opposite sex, that is kept secret from their families and society.