great warmth and earnestness of feeling: to speak with great fervor.
intense heat.

Also especially British, fer·vour.

Origin of fervor

1350–1400; Middle English fervo(u)r < Anglo-French < Latin fervor heat (see fervent, -or1)

Synonyms for fervor

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for fervour

Historical Examples of fervour

  • It was one which we all ought to form if the fervour of our passions will permit us.

  • He had worked himself into quite a religious glow and fervour.

    Little Dorrit

    Charles Dickens

  • The first dawning of genuine love—the fervour of adoration, all were fled.

    Gomez Arias

    Joaqun Telesforo de Trueba y Coso

  • Words gush forth from him in a fervour of gratitude for the pleasures of the eye.

    Mountain Meditations

    L. Lind-af-Hageby

  • Even from his own mother did he conceal the fervour of his love for Mary.

British Dictionary definitions for fervour


US fervor


great intensity of feeling or belief; ardour; zeal
rare intense heat

Word Origin for fervour

C14: from Latin fervor heat, from fervēre to glow, boil
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 fervour

chiefly British English spelling of fervor (q.v.); for spelling, see -or.



mid-14c., "warmth or glow of feeling," from Old French fervor (Modern French ferveur) "heat, enthusiasm, ardor, passion," from Latin fervor "a boiling, violent heat; passion, ardor, fury," from fervere "to boil" (see brew).

Online Etymology Dictionary, © 2010 Douglas Harper