Related by affinity to the wife.
Hemoglobin has a high affinity for oxygen.
A married couple is an example of affinity.
Siblings are an example of affinity.
How a mountain biker feels about their bike is an example of affinity.
Origin of affinity
- Middle English affinite relationship by marriage from Old French afinite from Latin affīnitās from affīnis related by marriage affined
From American Heritage Dictionary of the English Language, 5th Edition
- From Old French affinité.