The phrase "most trigger-happy" refers to a person who is eager to use a weapon or act aggressively without considering the consequences. Antonyms for this phrase would include adjectives that describe a person who is calm, considered, or hesitant to use force. These could include words like peaceful, pacifist, cautious, thoughtful, or diplomatic. Alternatively, antonyms could focus on the type of behavior that would be the opposite of being trigger-happy, such as avoiding conflict, seeking consensus or compromise, or attempting to deescalate tense situations. Examples of antonyms in this context could include words like conciliatory, peacemaker, or mediator.