Frowning at is a nonverbal expression of disapproval or dissatisfaction. The antonyms of frowning at can include smiling, laughing, and chuckling, which represent positive expressions of joy, happiness, and pleasure. Instead of frowning at someone, you can show approval and appreciation by nodding, patting on the back, or giving a thumbs up. Other antonyms of frowning at might include praising, encouraging, or complimenting. Positive emotions and expressions can go a long way in creating and maintaining healthy relationships with others. So, whenever possible, try to replace a frown with a smile, and watch as your relationships improve.