The phrase "putting one over" means to deceive or trick someone. Some antonyms for this phrase would be being honest, truthful, or transparent. Instead of trying to mislead or pull a fast one on someone, you could opt to be straightforward and candid. Other antonyms for "putting one over" might include being sincere, forthright, or genuine. By choosing the opposite of deceit, you can build trust and foster better relationships with those around you. So, rather than trying to deceive someone, consider being open and honest with them for a more positive outcome.