The term 'FORMER Partner' can be represented by two crossword solutions: LATTER (6 letters) and EX (2 letters). The word 'LATTER' is an adjective meaning 'the second of two people or things mentioned'. It is often used to refer to the second of two people in a relationship, such as a FORMER partner. The word 'EX' is a prefix meaning 'FORMER' or 'out of'. It is commonly used to refer to a FORMER partner, such as an EX-boyfriend or EX-girlfriend. Together, these two words can be used to describe a FORMER partner.