The crossword solution for the term SPLIT TO JOIN is ELOPE, which is a five-letter word. Eloping is a term used to describe when two people decide to get married without informing their families or friends. This is often done in secret and is usually done as a way to avoid family disapproval or other obstacles. In this case, eloping can be seen as a metaphor for the phrase SPLIT TO JOIN, as it involves two people separating from their families in order to join together in marriage.