There are many synonyms for the phrase "makes love," all of which have a slightly different connotation and level of intimacy. Some common synonyms include "has sex," "makes out," "fornicates," and "gets intimate." Other words that could be used in a more romantic or poetic context include "entwine," "merge," "unite," and "consummate." Of course, some euphemisms for sexual activity may also be used as synonyms, such as "making whoopee," "getting busy," or "hooking up." Ultimately, the choice of synonym depends on the context and the level of formality or intimacy desired.