Some antonyms for the word "namesakes" include: strangers, unrelated, unalike, dissimilar, different, and distinct. These words suggest a lack of connection or similarity between individuals. While a namesake implies a shared identity or similar qualities, these antonyms indicate a separation, contrast, or even opposition. For example, a stranger would have no connection or similarity to another person, while someone who is unrelated would not share the same family or heritage. These antonyms highlight the diversity and individuality of people, reminding us that not everyone is alike, even if they share a name.