The antonyms for the term "high principled" can be defined as someone who lacks morals or principles, and may engage in deceitful or dishonest behavior. Words that can be used in contrast to "high principled" include "unprincipled," "deceitful," "dishonest," "unscrupulous," "corrupt," "immoral," "unethical," or "unjust." These antonyms suggest individuals who are willing to compromise their morals or deceive others to achieve their own ends, without regard for the long-term consequences to others. Persons who embody these qualities can often be described as opportunistic, ruthless or cutthroat, and are not to be trusted in business or personal dealings.