An illicit affair is a romantic or sexual relationship that is kept secret from others, usually because it is not socially accepted or is considered to be inappropriate. The two crossword solutions for this term are 'AMOURS' and 'LIAISONS'. AMOURS is a French word meaning 'love affairs' and LIAISONS is a French word meaning 'connections or relationships'. Both words refer to a secret relationship between two people, which is often considered to be illicit.