Alterity is a term used to describe the state of being different or other. The word alterity is often used in philosophy and sociology to describe the differences between people, groups, or cultures. Some antonyms of alterity include sameness, homogeneity, conformity, and similarity. These words describe the state of being the same, similar, or identical to others. While alterity emphasizes differences, these antonyms focus on similarities and commonalities. Other antonyms for alterity include likeness, equality, and identity. These words deny the existence of otherness and emphasize the importance of similarity and familiarity in social relationships.