The term 'GET CHECKMATED' is a phrase used in the game of chess, which is a two-player strategy board game. The term means that one player has been defeated by the other player, usually due to a series of moves that leave the losing player with no possible way to win. The crossword solution for this term is 'LOSE, ' which is a four-letter word that accurately describes the outcome of the game when one player gets checkmated.