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

  • Again; anew: rebuild.
  • Backward; back: react.
  • Used as an intensive: refine.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • again, anew
  • backward

from the GNU version of the Collaborative International Dictionary of English

  • A prefix signifying back, against, again, anew. Combinations containing the prefix re- are readily formed, and are for the most part of obvious signification.


Middle English, from Old French, from Latin; see re- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French re- in some cases, directly from Latin re- in others. Displaced native English ed-, eft-, gain-, with-/wither-. (Wiktionary)



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