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affinal

[a-fahyn-l, uh-fahyn-l, af-ahyn-l] /æˈfaɪn l, əˈfaɪn l, ˈæf aɪn l/
adjective
1.
related by or concerning marriage.
Origin
1600-1610
1600-10; < Latin affin(is) a relative + al1. See affinity
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for affinal
  • Results revealed that nearly all surviving ex-affinal relationships involved adults with children, especially custodial parents.
  • affinal relatives, or in-laws, are all your relatives by marriage.

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