1
: of the same or similar nature : generically alike
the cognate fields of film and theater
2
: related by blood
a family cognate with another
also : related on the mother's side
3
a
: related by descent from the same ancestral language
Spanish and French are cognate languages.
b
of a word or morpheme : related by derivation, borrowing, or descent
English "eat" and German "essen" are cognate.
c
of a substantive : related to a verb usually by derivation and serving as its object to reinforce the meaning (such as song in "she sang a song")
cognately adverb

cognate

2 of 2

noun

: one that is cognate with another
"Eat" and "essen" are cognates.

Did you know?

The story of "cognate" is all relative: that is, it's all about relatives. Cognate words share an ancestor, like "allude" and "prelude" (which both trace to the Latin root ludere) and the English "brother" and the German Bruder (which are both related to the Greek phrater). Cognate languages, like French, Spanish, and Italian, descend from the same ancestral language. People related through a common ancestor are cognate, and groups of people, such as tribes, can be cognate to one another. "Cognate" also describes things related in a more figurative way, as in "cognate developments," "cognate disciplines," or "cognate problems." "Cognate" itself comes from the Latin cognatus which traces to Latin nasci meaning "to be born." Some words cognate to "cognate" include "innate," "nascent," "native," and "Renaissance."

Examples of cognate in a Sentence

Adjective English “eat” and German “essen” are cognate. Spanish and French are cognate languages.
Recent Examples on the Web
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Adjective
Remembering in daylight this sensation of awaking from a dreamworld to reality seemed cognate to the experience on the highway: the feeling of being ensorcelled and then awaking from it. John Crowley, Harper's Magazine, 8 Dec. 2021

Word History

Etymology

Adjective

Latin cognatus, from co- + gnatus, natus, past participle of nasci to be born; akin to Latin gignere to beget — more at kin

First Known Use

Adjective

circa 1645, in the meaning defined at sense 1

Noun

1754, in the meaning defined above

Time Traveler
The first known use of cognate was circa 1645

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Cite this Entry

“Cognate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cognate. Accessed 9 Apr. 2025.

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