Hold out on is a phrase commonly used to refer to someone who is withholding information or something from others. Some main antonyms for this phrase include sharing, giving, revealing, divulging, and confessing. Sharing implies that the person is openly offering or giving away something, whereas giving is the act of presenting something as a gift or in a voluntary manner. Revealing suggests the act of disclosing information, while divulging pertains to the process of making previously confidential information public. Finally, confessing denotes the act of admitting or acknowledging something that was previously kept hidden or secret. These antonyms carry positive connotations and imply transparency, honesty, and open communication.