The term 'Great White Shark Relative' can be summarized by the crossword solution MAKO, which is a four letter word. The Mako shark is a species of mackerel shark that is closely related to the Great White Shark. It is a large, fast-swimming species that is found in temperate and tropical waters around the world. It is known for its long, pointed snout and its ability to leap out of the water. Mako sharks are apex predators and feed on a variety of fish, squid, and other marine life.