The term "thumbsing down" is typically associated with expressing disapproval or rejection. However, there are several antonyms that convey opposite meanings, including "approving," "endorsing," "supporting," "praising," and "endorsing." These words suggest positive acceptance, agreement, and satisfaction with a particular subject. Conversely, "disliking," "condemning," "rejecting," and "criticizing" also serve as additional antonyms to "thumbsing down," conveying negative evaluation and judgment. Utilizing these antonyms can provide a more nuanced vocabulary to express various shades of opinions towards a particular issue, from utter disapproval to complete admiration.