Ilmo adeer

Ilmo adeer (also called ina adeer) is a kinship term used to describe a person with whom you share a grandparent but not a parent. In other words, it refers to the child of your father's or mother's sibling.

This relationship exists universally across all societies, but the terminology and social significance attributed to it vary. Somali, like other African and Asian languages, distinguishes between the paternal and maternal sides, unlike English which uses a single term, cousin.

Somali terminology

The term "adeer" refers to the father's brother. Thus "ilmo adeer" originally means the child of your father's brother. "Abti" refers to the mother's brother, while "habaryar" or "eeddo" are used for female siblings of parents—"eeddo" being the father's sister and "habaryar" the mother's sister. As a result, "ilmo adeer" is often used broadly to refer to anyone with this type of relationship.

Degree distinction

Anthropology and law distinguish between first cousins (who share a grandparent) and second cousins (who share a great-grandparent). There is also the category of "once removed," meaning two people are not of the same generation—for example, the child of your first cousin.

Marriage and law

Marriage between ilmo adeer is permissible under Islamic law and is customary in Somali and other Middle Eastern societies. Some Western countries, particularly certain U.S. states, restrict or prohibit first-cousin marriage. Medical research has indicated that close-relative marriage increases the likelihood of recessive genetic disorders, though the extent of risk depends on how many generations of relatives have married within the family.

Social role

In Somali society, organized along clan and lineage lines, ilmo adeer form part of the "reer" (close kinship group) that shares responsibility for diya (blood compensation), economic support, and defense. Paternal cousins are typically considered of the same lineage, deriving from the patrilineal descent system.