The term 'Then It's Settled' is often used to indicate that a decision has been made and all parties involved agree to abide by it. The crossword solution for this term is DEAL, which is a four-letter word meaning an agreement between two or more parties. This agreement can be verbal or written and is usually legally binding. The phrase 'Then It's Settled' is used to signify that the DEAL has been agreed upon and all parties are in agreement.