Being angry or upset is a common human emotion, and the phrase "be pissed off" is often used to describe this feeling. However, there are numerous synonyms that can be used to convey these emotions in a more varied and nuanced way. Some examples of synonyms for "be pissed off" include feeling aggravated, irritated, frustrated, miffed, cross, incensed, outraged, fuming, seething, and boiling. Each of these words carries a slightly different connotation and can be used in different situations to describe feelings of anger and frustration. Learning how to use synonyms effectively can help to improve our communication and convey our emotions more accurately.