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Alternative formsEdit


From Old French, from Late Latin rigorosus.


  • IPA(key): /ˈɹɪɡəɹəs/
  • (file)
  • Rhymes: -ɪɡəɹəs


rigorous (comparative more rigorous, superlative most rigorous)

  1. Showing, causing, or favoring rigour/rigor; scrupulously accurate or strict; thorough.
    a rigorous officer of justice
    a rigorous execution of law
    a rigorous inspection
    • 2013 August 3, “Boundary problems”, in The Economist, volume 408, number 8847:
      Economics is a messy discipline: too fluid to be a science, too rigorous to be an art. Perhaps it is fitting that economists’ most-used metric, gross domestic product (GDP), is a tangle too. GDP measures the total value of output in an economic territory. Its apparent simplicity explains why it is scrutinised down to tenths of a percentage point every month.
  2. Severe; intense.
    a rigorous winter.

Usage notesEdit

Although British English has rigour vs. American English rigor, rigorous is spelled thus in all varieties of English.



Derived termsEdit


The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout § Translations.

Further readingEdit

  • rigorous at OneLook Dictionary Search
  • rigorous” in The Century Dictionary, New York, N.Y.: The Century Co., 1911.