[fee-bruh l, feb-ruh l or, esp. British, fee-brahyl]


pertaining to or marked by fever; feverish.

Origin of febrile

1645–55; < New Latin, Medieval Latin febrīlis. See fever, -ile
Related formsfe·bril·i·ty [fi-bril-i-tee] /fɪˈbrɪl ɪ ti/, nounnon·fe·brile, adjectivepost·fe·brile, adjectiveun·fe·brile, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for febrile

Contemporary Examples of febrile

  • In the febrile atmosphere of Greece waiting for the onslaught everyone knows is coming, secret agents are proliferating.

    The Daily Beast logo
    The Perfect Spy Thriller for Dads

    Michael Korda

    June 18, 2010

Historical Examples of febrile

British Dictionary definitions for febrile



of or relating to fever; feverish
Derived Formsfebrility (fɪˈbrɪlɪtɪ), noun

Word Origin for febrile

C17: from medical Latin febrīlis, from Latin febris fever
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for febrile

1650s, from Medieval Latin febrilis "pertaining to fever," from Latin febris "a fever" (see fever).

Online Etymology Dictionary, © 2010 Douglas Harper

febrile in Medicine


[fĕbrəl, fēbrəl]


Of, relating to, or characterized by fever; feverish.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.