Antonyms for the word "villainize" include phrases that denote honor or admiration, such as "glorify," "celebrate," "praise," or "applaud." These words indicate that someone is being recognized or praised for their heroic or noble actions, rather than being demonized or condemned as a villain. Other possible antonyms for "villainize" might include words like "elevate," "ennoble," "exalt," or "dignify," which suggest that someone is being raised to a higher status or position of respect rather than being cast down or vilified.