What does nonkin mean?
Nonkin means a person who is not one's relative. The word contrasts with "kin," a collective term for relatives by blood, marriage, or adoption, and it is especially associated with American legal and institutional language. Rather than implying that such a person is unknown or socially distant, nonkin simply identifies someone outside a family relationship. This distinction can be important in wills, inheritance law, adoption, and other situations where eligibility depends on family ties. For example, a statute may allow a property to pass to nonkin beneficiaries only when no qualifying relative is available. In ordinary conversation, "nonrelative" or "not a family member" will usually sound more natural, but nonkin is useful when the contrast between relatives and everyone else must be explicit. Its limited frequency and formal register make it an uncommon but precise term.
nounA person who is not a relative; a nonrelative.
- A person who is not related to someone by blood, marriage, or adoption.
"The family celebrated together, along with friends and other nonkin."
"She regarded the members of the club as family, though they were all nonkin."
"The statute grants recovery to certain nonkin beneficiaries when no eligible relative can be found."
Both plurals are recorded, with nonkin sometimes used collectively.
"Friends and nonkins gathered to celebrate the occasion."
Nonkin is “kin” with “non” in front—and it identifies everyone outside the family circle.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does nonkin come from?
Nonkin is formed in English by combining the negative prefix non- with kin, the word for relatives or family members. The prefix ultimately comes from Latin non, meaning "not," while kin derives from Old English cynn, meaning "family" or "kinship group." The modern form developed as the opposite of kin and is chiefly associated with American usage.
How nonkin is actually used
Nonkin is uncommon and has a formal or legal tone. It is chiefly used in American English and is more precise than the broader term "outsider," since it specifically concerns family relationships.