Buying out refers to an action of purchasing something or acquiring complete control over something. There are several synonyms for the phrase 'buying out,' such as takeover, acquisition, purchase, takeover bid, and buying up. A takeover refers to buying out a company or acquiring control over it. Acquisition means acquiring control or ownership over something, while purchase means buying something in exchange for payment. A takeover bid is an offer to buy the shares of a public company. Buying up is used when someone purchases all possible items of a particular product in the market. Overall, the phrase 'buying out' has several synonyms, all indicating an action of acquiring control or ownership over something.