What does unpaired mean?
Unpaired describes something that has no partner, match, or corresponding member. The most familiar use is literal: an unpaired sock, glove, shoe, or item is one whose partner is missing. The word can also describe a person or living thing lacking a mate, though “single” or “unattached” may sound more natural in some contexts. In scientific writing, unpaired data are observations that are not linked to one another through a matching procedure, whereas paired data are deliberately connected for comparison. In genetics, an unpaired chromosome is one without a homologous counterpart. The term is useful because it conveys not merely isolation or incompleteness but the specific absence of a planned or natural pairing. Although its negative construction makes its meaning transparent, unpaired remains more precise than vague alternatives such as “alone” when the relationship between two corresponding things is central to the context.
adjectiveNot joined, matched, or arranged with another member of a set. Lacking a corresponding partner, counterpart, or mate.
- Not joined, matched, or arranged with another member of a set.
- Lacking a corresponding partner, counterpart, or mate.
- Not linked to another observation or specimen through a matching design.
- Having no homologous chromosome or equivalent chromosomal counterpart.
"She found an unpaired glove at the back of the cupboard."
"The researcher used an unpaired statistical test to compare the two groups."
"An unpaired chromosome moved toward the pole during meiosis."
Sometimes the missing match is the whole point: an unpaired shoe can still tell a story all by itself.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does unpaired come from?
English formed unpaired by adding the negative prefix un- to paired. Paired, and ultimately pair, descend through Old French from Latin par, meaning “equal”; peer and parity also have roots connected with that Latin word. The prefixed form developed in English to express the absence of a corresponding partner or match.
How unpaired is actually used
The word is formal but broadly understood. For an unattached person, “single” is usually more idiomatic. In statistics, “unpaired” contrasts with data or observations linked through a matching or pairing procedure. In biology, it can describe a chromosome lacking a homologous counterpart.