The phrase "crawls fours" is an expression used to describe an animal or person moving on their hands and knees, in a crawling position. There are various synonyms that can be used to convey this meaning more effectively in different contexts or settings. Some of these alternative expressions include creeping, skulking, slinking, shuffling, scurrying, scuttling, and trudging on all fours. Each of these synonyms has a slightly different connotation or nuance, but all evoke images of a creature or individual moving laboriously and with difficulty. Whether in reference to a small insect or a human being, "crawls fours" and its synonyms are useful expressions for depicting this type of movement.