When someone is incensed, it means they are extremely angry or outraged about something. There are many synonyms that can be used to describe the same level of anger or outrage. For example, one might be infuriated, irate, livid, or fuming. Each of these words suggests a strong reaction to a perceived injustice or wrongdoing. Other synonyms could include seething, boiling over, or beside oneself with rage. These words all convey a sense of intense emotion and can be used interchangeably with "are incensed." By choosing the right synonym for the situation, you can accurately describe the strength of someone's reaction to a particular event.