The term WHAT THIS PUZZLE IS can be solved by the following crossword solutions: MENTALIST (9 letters), MINDREADER (10 letters), ONTHEROCKS (10 letters), and TREASUREMAP (11 letters). MENTALIST is a person who claims to have psychic powers, such as telepathy or clairvoyance. MINDREADER is someone who can read another person's thoughts. ONTHEROCKS refers to a drink served over ice cubes. TREASUREMAP is a map that leads to a hidden treasure. All of these words are related to the term WHAT THIS PUZZLE IS, which is a crossword puzzle.