1. a natural liking for or attraction to someone or something
2. a close similarity or connection between things
3. a natural ability or talent for something

Examples

• She has a natural affinity for languages and speaks five fluently.
• There’s a strong affinity between the two cultures despite their geographic distance.
• His affinity for mathematics led him to pursue a career in engineering.
• The artist felt an immediate affinity with the abstract painting.
• Scientists noted the affinity between the two species’ DNA structures.
• Children often show an affinity for animals at an early age.
• The wine’s affinity for certain foods makes it perfect for pairing.