The word "unprincesslike" refers to a behavior or attitude that is contrary to what is expected of a princess. Antonyms for this word would be "princesslike," "regal," or "majestic." A princess is known for her grace, elegance, and dignity. Therefore, words that can be used to describe a behavior that is befitting of a princess include "gracious," "polite," "courteous," "respectful," "noble," "refined" and "dignified." When someone displays unprincesslike behavior, it means they are rude, disrespectful, or impolite, showing traits that are unbecoming of royalty. Antonyms for unprincesslike behavior are necessary to communicate the behavior traits that are expected of a princess.