The phrase "took under one's wing" implies protection, guidance, and care towards someone. On the other hand, antonyms for this phrase would be words that signify the opposite; neglect, abandon or ignore. Words like disregard, forsake, overlook, neglect, reject, and abandon come to mind. These words sound harsh but they represent the actions to the opposite of what it means to take someone under one's wing. It's important to note that taking someone under one's wing not only benefits the person being taken in but also uplifts the one providing help. It restores faith in humanity and makes the world a better place.