The term 'CHEAT, INFORMALLY' can be solved with the 6-letter word EUCHRE. Euchre is a trick-taking card game that is popular in North America and Australia. It is typically played with four players in two teams of two. The goal of the game is to score points by taking more tricks than the opposing team. Cheating is not allowed, but players may informally try to deceive their opponents by playing cards that are not in their best interest.