Synonyms for affinity

noun

1. Natural liking or attraction

   fondness, liking, sympathy, proclivity; see affection 1, agreement 2, inclination 1.

2. Family relationship

   kinship, relation, relationship, bond, tie, connection, consanguinity, alliance, blood tie, association, attachment, union, propinquity, relationship by marriage, interconnection, parentage, fraternity, strain, lineage, heritage, agnation, cognation, breed, stock, affiliation.

3. Attractive force

   attraction, magnetism, magnetization, ionization, appetency, combining power, instability, susceptibility, attractivity, elective affinity, chemical affinity, valence.

4. Similarity

   likeness, resemblance, correspondence; see similarity.