The term "buys out" refers to the act of acquiring complete ownership or control of a particular entity, such as a business or a company. The antonyms of "buys out" would be terms that signify a partial or limited form of acquisition, such as partnership, collaboration, investment, lease, or joint venture. These words imply a shared responsibility or a temporary agreement between two or more parties, rather than a complete takeover. The antonyms for "buys out" are commonly used in situations where it is more beneficial for the parties involved to share the risks and benefits of a particular venture, rather than to take sole ownership or control.