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

  • adj. Of, relating to, or characterized by fever; feverish.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Feverish, or having a high temperature.
  • adj. Full of nervous energy.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Pertaining to fever; indicating fever, or derived from it

from The Century Dictionary and Cyclopedia

  • Pertaining to fever; marked by fever: as, the febrile stage of a disease.

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

  • adj. of or relating to or characterized by fever


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

Late Latin febrīlis, from Latin febris, fever.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Late Latin febrilis, from Latin febris ‘fever’.


  • Whatever the differences in manifestation the febrile diseases may show, the _febrile reduction of the digestive capacity of the stomach and the bowels is so characteristic_, that it should be specially noted in this connection.

    Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration

  • The PedsQLTM appears to be a feasible, valid, responsive indicator of HRQOL for short-term febrile illnesses evaluated in the ED.

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  • The fever-related seizures — called febrile seizures — are convulsions brought on by a fever in infants or small children.

    Feds checking post-vaccine seizures in young kids

  • Veniss Underground is the kind of book that inspires reviewers to say things like this: "There is a knit cohesion close in service to the novel's overall themes, an unfolding symbolism and allegory that is ultimately let loose during the final chapters, unleashing a Babel of imagery recalling the febrile panels of The Garden of Earthly Delights."

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  • There is a long historical evolution of the very common condition known as febrile convulsions. the clinical picture of benign Rolandic epilepsy became clear due to the efforts of numerous authors.

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  • Neutropenia that results in a fever is called febrile neutropenia, and it must be treated immediately to prevent the infection from spreading throughout the bloodstream-a serious condition known as septicemia, which can lead to organ failure.


  • The side effects to the flu vaccine include fever, vomiting and often seizures related to high fever, also known as febrile convulsions.


  • The Ministry of Health has told GPs not to use Fluvax after the children had fits caused by a high fever, known as febrile convulsions.

    Radio New Zealand News Headlines

  • A day earlier, in an atmosphere described as febrile by analysts, the Irish government was forced to deny that it was seeking emergency help from the International Monetary Fund.

    The Guardian World News

  • His bifocal glasses winked with a kind of febrile excitement that Danny understood he was expected to share.

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  • "All he could do was try, with a febrile, terrified intensity, to remember which of the dreams was his own." From Perdido Street Station by China Mieville.

    December 6, 2011

  • an interesting sounding word which should be more than just feverish--it should be a portmanteau word for feeble and brittle and something else I can't put my finger on. But it is not.

    April 15, 2008