The phrase "takes hat to" is an idiomatic expression that means to show respect or admiration towards someone. To find antonyms for this phrase, we can look at words that represent disrespect, disregard or contempt towards someone. Some possible antonyms might include "disrespect," "insult," "condemn" or "criticize". These terms signify a lack of regard for another person and are in direct contrast to the notion of "taking one's hat off" to someone. Other possible antonyms could include "ignore," "disregard," "ridicule," or "laugh at." All of these words indicate a lack of respect or regard for another person, which is the opposite of what it means to "take one's hat off.