Shortfuse means a quick-tempered, irritable person who easily gets angry or impatient. Its antonyms are words that represent the opposite meanings or characteristics such as calm, patient, and composed. Patience is a virtue and can prevent explosive reactions that can harm yourself and those around you. Antonyms of shortfuse include relaxed, easy-going, steady, nonchalant, unfazed, and composed. These antonyms suggest a person who is calm and level-headed even under stressful situations. People who possess these qualities handle unexpected situations with grace and poise. Therefore, it's crucial to cultivate patience and composure to avoid being a shortfuse and instead be a relaxed, nonchalant, and steady individual.