Antonyms (opposites):
* Calm: To soothe or make peaceful.
* Soothe: To make someone feel calmer and less upset.
* Pacify: To make someone calm or peaceful.
* Appease: To make someone less angry by giving them what they want.
* Placate: To make someone less angry by doing something to please them.
* Mollify: To make someone less angry or upset.
Synonyms (words with similar meanings):
* Infuriate: To make someone extremely angry.
* Anger: To make someone feel angry.
* Provoke: To make someone angry.
* Irritate: To make someone slightly angry or annoyed.
* Exasperate: To make someone very annoyed or frustrated.
* Inflame: To make someone's anger become more intense.
The best antonym or synonym to use depends on the specific context of your sentence.