"Anthropophaginians" is a word that has few antonyms as it is a specific term referring to a cannibalistic tribe. However, some possible antonyms could be words that imply compassion, kindness, and respect for human life. Words like altruists, humanitarians, philanthropists, and benefactors would be antonyms to the term "anthropophaginians" as they all denote individuals or groups concerned with the welfare of others. The opposite of a cannibalistic tribe would be a community that is accepting, tolerant, and respectful towards others. Therefore, antonyms for anthropophaginians would be terms that represent values and qualities that oppose violence, aggression, and cruelty towards others.