Antonyms for the word "counter-claim" include agreement, concession, admission, and compliance. These are all words that suggest a willingness to acknowledge and accept the opposing viewpoint, rather than arguing aggressively against it. An agreement involves coming to a mutual understanding, while a concession involves admitting a point that the other side has made. Admission involves acknowledging an error or fault on one's own side, while compliance involves following the other side's lead or request. These antonyms suggest a more conciliatory approach to conflict resolution, fostering mutual respect and understanding rather than escalating the disagreement.