The antonyms for the word "non-combative" are words that indicate aggression and hostility, like aggressive, belligerent, combative, and bellicose. These antonyms differ significantly from the original term, which means peaceful, calm, and passive in Nature. Other antonyms that can be used are militant, warlike, pugnacious, and confrontational.
These antonyms imply an attitude of aggression, and they are often used in the context of conflict, whether physical or verbal. In contrast, non-combative is used to indicate a peaceful resolution in a situation. Being non-combative means being free from hostility and not interested in engaging in a fight, both physically and verbally.