The antonyms for the term "more high-principled" encompass various words that are used to describe individuals who lack ethical values, morals, or principles. These polar opposite words include words like dishonest, unscrupulous, deceitful, fraudulent, corrupt, and dishonorable, among others. These negative terms are used to describe those who are willing to compromise their ethics or principles for personal gain, putting their needs before anyone else's. These antonyms depict a mindset that is selfish and immoral, devoid of any sense of justice, honesty, or fairness. While the opposite of "more high-principled" can vary per context, those antonyms provide a picture of people who are untrustworthy and lack integrity in their actions.