The term "more ungentlemanlike" indicates behaviors that are disrespectful, impolite, or crude. Its antonyms would include words like respectful, courteous, polite, refined, gracious, and dignified. It is essential to note that exhibiting positive traits and behaviors can make a significant difference in one's interactions with others. Being a gentleman or gentlewoman is not about one's social class, but rather about a way of life that includes demonstrating good manners, showing respect towards others, and practicing empathy. Thus, people who seek to make a positive impression in their personal or professional lives should aim at displaying grace, kindness, and refinement in their actions and communications.