The phrase "took down peg" typically means to lower someone's confidence, authority or status. So, the antonyms for this phrase would be words and phrases that signify raising someone's self-esteem, influence or importance. Some antonyms that can be used for "took down peg" could be "built up," "elevated," "uplifted," "boosted," "helped" or "supported." These words represent the act of increasing someone's confidence and their status. By using such antonyms, we can bring positivity and encouragement to the conversation and uplift the individual's spirits, rather than tearing them down.