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partner

/ˈpɑːt.nə(ɹ)/ noun

In Latin: consors, particeps Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about partner at Wordnik → Where our words come from →

  1. A person's partner in marriage.
  2. An associate in an activity or endeavor or sphere of common interest.
    the musician and the librettist were collaborators
  3. A person who is a member of a partnership.

verb

  1. Provide with a partner.
  2. Act as a partner.
    Astaire partnered Rogers

Origin

From Middle English partener, partiner, alteration (due to Middle English part) of Middle English parcener, from Old French parçonier, parçonneour (“joint heir”) from parçon (“partition”), from Latin partītiōnem, singular accusative of partītiō (“portion”). The word may also represent Old French part tenour (“part holder”). Compare also Middle English partifere (“partner”), partifelewe (“partner”). Doublet of parcener.

From Wiktionary, via Kaikki.org (CC BY-SA)