Playing false refers to being dishonest and insincere. It is an act that violates the norms of fair play and ethics. Its antonyms include playing fair, being honest and transparent, and displaying good sportsmanship. When we play fair, we uphold the principles of fairness, justice, and integrity. Playing fair entails being truthful and transparent, respecting rules and regulations, and avoiding cheating and deception. Displaying good sportsmanship, on the other hand, involves being gracious and respectful towards one's opponents, avoiding any form of derogatory or unsportsmanlike behavior. Ultimately, playing false reflects negative qualities such as dishonesty and lack of integrity, which are opposed to the virtues of honesty and uprightness.