Being irresolute means being uncertain, indecisive or hesitant. Antonyms for this word include being resolute, determined, decisive and firm. A person who is resolute is confident in their decisions and determined to achieve their goals. They do not hesitate or waver in their beliefs or actions. A decisive person is quick to make decisions and take action. They are not easily swayed and are known for their strong-willed nature. A firm person stands steadfast in their beliefs and remains unwavering in the face of challenges. By adopting these antonyms, individuals can cultivate strength, confidence and a clear sense of direction.