parent's sister or parent's sister-in-law

An aunt is relationship that describes a woman who is a sibling of a parent or is married to a sibling of a parent. Aunts are sometimes called Auntie or Aunty. A man is a nephew to their Aunt and a woman is a niece. An aunt is part of an extended family. The child of an aunt's is a cousin. Often the word aunt is used with people who are not related to show closeness or respect.

A chart showing the names for relationships in an extended family.

In many cultures there are different words to describe a person's mother's sister and father's sister. In Latin a mother's sister is matertera while a father's sister is amita.[1]


A maternal or paternal relative is one who is related through one's mother or father, respectively. For example, a maternal aunt is the subject's mother's sister. An in-law is a relationship that is not by blood, but instead by marriage. The in-law shares the in-law relationships of the spouse's relatives. For example, an aunt in-law could be the wife of the subject's uncle.

  • Aunt: the sister of someone's parent. The child of subject's an Aunt or Uncle's is the subject's cousin.
  • Half-aunt: the parent's half-sister.
  • Double half-aunt: a person who is a half sibling of both of the subjects parents.[2]
  • Grandaunt / great-aunt: the grandparent's sister.
  • Great-grandaunt / Great-great-uncle: the great-grandparent's full brother.
  • Aunt-in-law: the uncle's wife or the spouse's aunt.
  • Co-aunt-in-law: the spouse's uncle's wife.


  1. Constance Brittain Bouchard, Those of My Blood: Creating Noble Families in Medieval Francia (Philadelphia : University of Pennsylvania Press, 2001), p. 5.
  2. "GENETIC AND QUANTITATIVE ASPECTS OF GENEALOGY". Archived from the original on 2017-08-03. Retrieved 2020-07-06.