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

  • n. A new word, expression, or usage.
  • n. The creation or use of new words or senses.
  • n. Psychology The invention of new words regarded as a symptom of certain psychotic disorders, such as schizophrenia.
  • n. Psychology A word so invented.
  • n. Theology A new doctrine or a new interpretation of scripture.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A word or phrase which has recently been coined; a new word or phrase.
  • n. (uncountable) The act or instance of coining, or uttering a new word.
  • n. The newly coined, meaningless words or phrases of someone with a psychosis, usually schizophrenia.

from the GNU version of the Collaborative International Dictionary of English

  • n. The introduction of new words, or the use of old words in a new sense.
  • n. A new word, phrase, or expression.
  • n. A new doctrine; specifically, rationalism.

from The Century Dictionary and Cyclopedia

  • n. A new word or phrase, or a new use of a word.
  • n. The use of new words, or of old words in new senses.
  • n. A new doctrine.

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

  • n. a newly invented word or phrase
  • n. the act of inventing a word or phrase


From French néologisme, from Ancient Greek νέος ("new") + λόγος (logos, "word"). (Wiktionary)



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  • Often employers are driven by Law and its acts and regulations. Fiduciary responsibility also enters into that equation. So the organisation has to do its due diligence. While proper form would indicate training directed at compliance would simple lip service in the form of berating and controlling workers through interviews and evaluations about nonsensical goals be called due DIKIGENCE?

    November 18, 2015

  • Thanks to Erin McKean for her help with the definition for my neologism "Impert." A person who makes valuable contributions in a field of knowledge despite lacking formal training or professional connections in that field. The impert's contributions typically diverge from conventional styles, thinking, or theories of experts.

    December 11, 2012

  • There are tons of neologisms on this site.

    April 15, 2007

  • and my favorite new word: wordie!

    December 9, 2006