Auction off is a common phrase used in the world of bidding and sales. However, it's always good to expand your vocabulary and have other options to express the same meaning. Instead of "auction off," you could say "sell at auction," "put up for bidding," "offer to the highest bidder," "dispose of by public auction," or "present for sale by public bidding." These phrases convey the same message of offering an item or property to the highest bidder. They provide a unique flair to your language while removing some repetition in your communication and writing. By exploring synonyms, you can add variety to your vocabulary and express yourself more efficiently.