Definition of affinity


  • (immunology) the attraction between an antigen and an antibody.
  • (anthropology) kinship by marriage or adoption; not a blood relationship. Antonyms: consanguinity.
  • (biology) state of relationship between organisms or groups of organisms resulting in resemblance in structure or structural parts; "in anatomical structure prehistoric man shows close affinity with modern humans". Synonyms: phylogenetic relation.
  • a close connection marked by community of interests or similarity in nature or character; "found a natural affinity with the immigrants", "felt a deep kinship with the other students", "anthropology's kinship with the humanities". Synonyms: kinship.
  • the force attracting atoms to each other and binding them together in a molecule; "basic dyes have an affinity for wool and silk". Synonyms: chemical attraction.
  • inherent resemblance between persons or things.
  • a natural attraction or feeling of kinship; "an affinity for politics", "the mysterious affinity between them", "James's affinity with Sam".

Related words

rapport, resonance, sympathy.

Rhymes with affinity

alkalinity, divinity, femininity, masculinity, trinity, vicinity.

More information about affinity

affinity unscrambled

Scrabble and Words With Friends points

  • affinity is a valid Scrabble US word, worth 17 points
  • affinity is a valid Scrabble UK word, worth 17 points
  • affinity is a valid Words With Friends word, worth 17 points
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