The term "quick trigger" typically refers to a person who easily becomes angered or agitated, reacting quickly and forcefully to perceived threats or insults. Some antonyms that could be used to describe someone who is the opposite of a "quick trigger" might include "calm," "even-tempered," "patient," "level-headed," or "cool-headed." These individuals tend to be able to maintain their composure in stressful situations, avoiding impulsive or reactive behavior. Other antonyms that might apply could include "restrained," "measured," "deliberate," or "thoughtful." Together, these antonyms paint a picture of someone who is reliable, methodical, and able to approach challenges with a steady, thoughtful approach.