Antonyms for the word "most castigated" would include praised, celebrated, acclaimed, commended, complimented, venerated, admired, honored, lauded, and extolled. When someone is not being castigate, it usually means they are being appreciated for their hard work or their ethical behavior. Being castigated means being heavily criticized or blamed for something, whereas the antonyms mentioned above mean being acknowledged or recognized for a job well done. Hence, antonyms of "most castigated" are words that represent positivity, encouragement, and recognition towards the people, rather than criticism or condemnation.