The phrase "unhappy about" is a commonly used expression that implies a negative feeling in response to a situation or event. However, there are a variety of synonyms that can be used to convey the same sentiment in different ways. These alternatives include: displeased with, dissatisfied with, irritated by, aggrieved by, perturbed by, vexed by, frustrated by, angered by, disappointed by, and disheartened by. Each of these options has a slightly different connotation, but all can be used to express a negative reaction to something that is causing discontent or distress. By exploring different synonyms for "unhappy about," a writer can choose the term that best fits the tone and context of their message.