The term 'Isn't Square' is a phrase used to describe someone who is not honest or reliable. It can also be used to describe someone who is not following the rules or behaving in a socially acceptable manner. The crossword solutions for this term are FIBS (four letters) and OWES (four letters). FIBS is an acronym for False Information Believed to be True, which is a way of describing someone who is not telling the truth. OWES is an acronym for Owed Money, which is a way of describing someone who has not paid back what they owe. Together, these two solutions provide a clear picture of someone who is not square, or honest and reliable.