The antonyms for the phrase "give something out" include withhold, retain, keep, save, and hold back. These words suggest a sense of reserve, retaining or not revealing information, materials, or objects. Withholding, for example, means to keep something or someone back, while retain refers to keeping something in one's possession. Keep implies retaining ownership or possession of something, while hold back implies restricting or restraining something. These antonyms show the opposite of the action of giving something out, which suggests the act of giving information or materials to other parties, often in a generous or helpful manner.