The term 'Can You Believe It?' can be broken down into four crossword solutions: DOGMA (5 letters), ISM (3 letters), UNREAL (6 letters), and TENET (5 letters). DOGMA is a set of beliefs or principles that are accepted as true, often without question. An ISM is a suffix used to form nouns that denote an action, state, or doctrine. UNREAL is an adjective meaning not real or not existing in fact. Lastly, a TENET is a principle, belief, or doctrine generally held to be true. All of these words together can be used to express disbelief in something, as if to say 'Can you believe it?'.