The term 'WHAT'S THAT?' can be solved by three words with a total of 12 letters: HUH (3 letters), AGAIN (5 letters), and LIKE (4 letters). HUH is an expression of surprise or disbelief, often used to indicate confusion. AGAIN is used to express repetition or to emphasize something that has already been said. LIKE is used to compare two things or to express similarity. Together, these three words form an expression of confusion and surprise, often used when someone does not understand something.