The term unworthy is an antonym for "more unchivalrous". It implies someone who lacks honor or dignity, showing a disregard for integrity and moral principles. Cowardly is another antonym, suggesting someone who behaves in a craven or timorous manner. Unheroic, ungentlemanly, and dishonorable are also antonyms that describe the opposite behavior to that of being chivalrous. These antonyms emphasize the negative qualities associated with unchivalrous behavior, such as selfishness, deviousness, and a lack of basic morality. By using these antonyms, one can emphasize the importance of positive virtues, such as honor, courage, and compassion.