Relatedness is about the degree to which two things are connected or interrelated, while unrelatedness refers to the absence of any meaningful connection between two things or concepts. Some antonyms for unrelatedness include relatedness, association, relation, bond, relevance, and correlation. The antonyms for unrelatedness suggest a range of meaning connections, from strong bonds of shared ancestry or cultural heritage to more abstract but essential links between ideas or events. In contrast, unrelatedness implies a lack of connection, relevance, or significance, suggesting an absence of any meaningful pattern or coherence within or between things.