"Held out on" is a phrasal verb that means to conceal or to hide information or resources from someone. The antonyms for "held out on" would be words that describe the opposite actions, such as sharing, disclosing, revealing, or exposing. These words imply a sense of openness and honesty, where one is willing to provide information or resources freely without any intention to conceal or hide them.
For instance, if someone says, "I'm not going to hold out on you," it means, "I'm not going to keep anything from you." This indicates that the person is willing to share everything they know or have, without withholding anything. Therefore, the antonyms of "held out on" help to describe an act of transparency and cooperation, where both parties benefit from honesty and trust.