Noun
Relationship by marriage (as between a husband and his wife's blood relations, or between a wife and her husband's blood relations); -- in contradistinction to consanguinity, or relationship by blood; -- followed by with, to, or between.
Kinship generally; close agreement; relation; conformity; resemblance; connection; as, the affinity of sounds, of colors, or of languages.
Companionship; acquaintance.
That attraction which takes place, at an insensible distance, between the heterogeneous particles of bodies, and unites them to form chemical compounds; chemism; chemical or elective affinity or attraction.
A relation between species or highe/ groups dependent on resemblance in the whole plan of structure, and indicating community of origin.
A superior spiritual relationship or attraction held to exist sometimes between persons, esp. persons of the opposite sex; also, the man or woman who exerts such psychical or spiritual attraction.
Source: Webster's dictionaryIt is wrong to think that love comes from long companionship and persevering courtship. Love is the offspring of spiritual affinity and unless that affinity is created in a moment, it will not be created for years or even generations. Kahlil Gibran
Violent antipathies are always suspicious, and betray a secret affinity. William Hazlitt
Truth never yet fell dead in the streets; it has such affinity with the soul of man, the seed however broadcast will catch somewhere and produce its hundredfold. Theodore Parker
My friends call me 'Dolittle One' [a reference to her physical stature and affinity for animals]. Gloria Estefan
Women do have an affinity for evil, for believing that no woman is to be trusted, but that some men are too innocent to protect themselves. William Faulkner
Affinity is a mysterious thing, but it is spicy. Japanese Proverb