from The American Heritage® Dictionary of the English Language, 4th Edition

  • intransitive v. To engage in coitus or sexual intercourse.
  • adj. Coupled; joined.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To engage in sexual intercourse.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Joined; associated; coupled.
  • adj. Joining subject and predicate; copulative.
  • intransitive v. To unite in sexual intercourse; to come together in the act of generation.

from The Century Dictionary and Cyclopedia

  • To join together.
  • To unite as a pair; especially, to unite sexually.
  • Joined.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. engage in sexual intercourse


Latin cōpulāre, cōpulāt-, to join together, from cōpula, link.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin copulare ("to couple") perfect participle from stem copulat- (Wiktionary)



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