The term 'It's a Fact' can be represented by four different crossword solutions: DATUM (5 letters), TRUTH (5 letters), TRUISM (6 letters), and YOUCANTDENYIT (13 letters). A DATUM is a piece of information, usually numerical, that is used as a basis for reasoning, discussion, or calculation. Truth is the quality or state of being true, and a TRUISM is a statement that is obviously true and says nothing new or interesting. The phrase 'you can't deny it' implies that something is so true that it cannot be denied. All of these solutions represent the idea that something is an indisputable fact.