Short-tempered is a personality trait that is often associated with irritability, aggression, and impatience. However, not everyone possesses this characteristic trait. Some people may have the opposite of short-tempered, which means they are calm, patient, and easygoing. These people are known to be level-headed, tolerant, and composed. Antonyms for short-tempered include gentle, patient, easy-going, calm, mellow, and relaxed. A person who is not short-tempered can control their emotions, remain composed under pressure and exhibit a peaceful demeanor, which helps them cope with life's challenges positively. Therefore, being the opposite of short-tempered presents many advantages in personal and professional settings.