The term LIKE A CHEETAH can be summarized using the crossword solutions FLEET (5 letters), FAST (4 letters), and SPEEDY (6 letters). FLEET means to move quickly and lightly, FAST means to move with great speed, and SPEEDY means to move quickly. All of these words describe the same thing: moving quickly, like a cheetah. Cheetahs are known for their incredible speed, so this term is an apt description of something that moves quickly.