Study for the SAT Vocabulary 2025 Test. Master vocabulary with flashcards and questions, each with detailed explanations. Get ready for your exam!

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.