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From Old French faloir, from an earlier falleir, from a changing of Old French faillir after its third person singular, faut, earlier falt (from Latin fallit), based off the model of valoir. Faillir derives in turn from Vulgar Latin fallīre, from Latin fallere, fallō. Compare Franco-Provençal falêr from a similar development in Old Franco-Provençal.




  1. (impersonal) to be necessary
    Il faut que j'y aille
    I need to go.
    Faut que j'y aille.
    Got to go.
    Il a tout ce qu'il te faut.
    He has everything that you need.
  2. to take (time)
    • 1943, Antoine de Saint-Exupéry, Le Petit Prince:
      Il me fallut longtemps pour comprendre d'où il venait.
      It took me a long time to understand where he came from.
  3. (reflexive, with "en") to be missing


This verb is defective, only conjugated in the third-person singular. This verb is impersonal and is conjugated only in the third-person singular.

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