The phrase "makes vacant" refers to the act of emptying or making a space available. Antonyms for this phrase could refer to actions that fill or occupy a space. Some words that could serve as antonyms for "makes vacant" include "occupy," "fill," "populate," "crowd," "stuff," and "load." These words indicate the act of filling up the space and making it occupied. Other antonyms could include "maintain," "preserve," "support," and "sustain," which imply the act of keeping the space occupied or in use, rather than vacating it. Overall, the antonyms for "makes vacant" encompass a range of actions that involve filling, utilizing, and maintaining a space.