ardor

[ahr-der]
noun
  1. great warmth of feeling; fervor; passion: She spoke persuasively and with ardor.
  2. intense devotion, eagerness, or enthusiasm; zeal: his well-known ardor for Chinese art.
  3. burning heat.
Also especially British, ar·dour.

Origin of ardor

1350–1400; Middle English < Latin, equivalent to ārd(ēre) to burn + -or -or1; replacing Middle English ardure < Old French ardur < Latin, as above; 17th century ardour < Anglo-French < Latin, as above

Synonyms for ardor

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British Dictionary definitions for ardour

ardour

US ardor

noun
  1. feelings of great intensity and warmth; fervour
  2. eagerness; zeal

Word Origin for ardour

C14: from Old French ardour, from Latin ārdor, from ārdēre to burn
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 ardour
n.

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

ardor

n.

early 15c., "heat of passion or desire," from Old French ardure "heat, glow; passion" (12c.), from Latin ardorem (nominative ardor) "a flame, fire, burning, heat;" also of feelings, etc., "eagerness, zeal," from ardere "to burn" (see ardent). In Middle English, used of base passions; since Milton's time, of noble ones.

Online Etymology Dictionary, © 2010 Douglas Harper