Indignant means to feel anger or offense at an injustice or wrongdoing. Some specific synonyms for indignant are outraged, offended, incensed, irate, and furious. These words express feelings of anger and frustration towards a situation that is deemed unfair or unjust. Other synonyms for indignant include livid, seething, vexed, and exasperated. These words convey a sense of intense anger and frustration often accompanied by physical manifestations such as shaking or trembling. It's important to choose the right synonym to accurately describe the level of anger or offense one is feeling in a given situation.