The term SHOW TO BE FALSE can be broken down into six crossword solutions: DEBUNK (6 letters), BELIE (5 letters), REFUTE (6 letters), DISPROVE (8 letters), REBUT (5 letters), and NEGATE (6 letters). Each of these words is used to describe the act of disproving or refuting a claim, argument, or belief. DEBUNK means to expose false claims or beliefs as being untrue. BELIE means to contradict or be in opposition to something. REFUTE means to prove something wrong or invalid. DISPROVE means to demonstrate that something is false. REBUT means to oppose or contradict an argument. Finally, NEGATE means to deny or nullify something.