The phrase "hadst it in for" means to have a strong dislike or ill-will towards someone. Antonyms for this phrase could include "admire," "respect," "cherish," and "hold in high esteem." These antonyms suggest positive feelings and respect towards the subject, rather than a negative disposition that may lead to animosity. Other related antonyms could include "forgive," "let go," and "move on," which imply a willingness to move forward from a past conflict or disagreement. Overall, antonyms for "hadst it in for" emphasize the importance of kindness, compassion, and forgiveness in our relationships with others.