"Unseemlier" is an adjective that describes conduct or behaviour that is inappropriate, indecent or morally objectionable. Antonyms for unseemlier include appropriate, decent, moral, ethical, fitting, and proper. Appropriate refers to conduct or behaviour that is fitting, suitable, and acceptable in a given situation. Decent and moral refer to actions or behavior that is morally upright, honorable, and free from immorality or indecency. Ethical describes behavior that is in alignment with accepted principles of right and wrong, and proper refers to actions or behavior that is socially accepted or conforms to social norms. Thus, using antonyms for "unseemlier" can help to promote moral and ethical behavior.