What is the best synonym for 'affinity'?

The best synonym for 'affinity' is 'connection' because affinity refers to a natural liking for or an inherent relationship with something. It implies a bond or a similarity that attracts individuals or things to each other. For instance, one might have an affinity for a particular type of music or activity, indicating a close connection or attraction to it.

In contrast, the other options suggest opposite ideas. 'Dislike' directly counters the notion of an attraction or affinity, while 'isolation' and 'separation' denote a lack of connection or a state of being apart. Thus, 'connection' captures the essence of affinity more accurately.