"Auctions off" is a phrase commonly used to describe the process of selling items through an auction. However, there are several synonyms that can be used in place of this phrase. One alternative is "sells by auction," which conveys the same meaning in a more formal tone. Another option is "puts up for bid," which emphasizes the competitive aspect of the auction process. "Offers for sale," "disposes of," and "vends" are also viable synonyms that can be used in a variety of contexts. No matter which synonym is chosen, the key takeaway is that the items for sale are being offered to the highest bidder through an organized auction process.