The antonyms for the phrase "spreads it on" could be "removes it off" or "wipes it away." These antonyms imply a contrary action to the act of spreading, which means to distribute, apply, or lay out over a surface. Removing or wiping off, on the other hand, means taking away or erasing something previously spread. Other possible antonyms could be "restricts it" or "constrains it," which suggest limiting or confining the spread to a specific area or circumstance. In any case, antonyms provide a useful tool to understand the nuances and various meanings of words, helping to enrich our language and communication skills.