- Britain, Canada, and Australia spelling of
- 1818, [Mary Shelley], chapter VI, in Frankenstein; or, The Modern Prometheus. […], volume III, London: […] [Macdonald and Son] for Lackington, Hughes, Harding, Mavor, & Jones, OCLC 830979744, page 120:
- I rushed towards her, and embraced her with ardour; but the deathly languor and coldness of the limbs told me, that what I now held in my arms had ceased to be the Elizabeth whom I had loved and cherished.
- 1931, H. P. Lovecraft, The Whisperer in Darkness, chapter 6:
- The purpose of my visit, and the frightful abnormalities it postulated struck at me all at once with a chill sensation that nearly over-balanced my ardour for strange delvings.
ardour — see ardor
- Late Anglo-Norman spelling of
- toun ardour et l’estudie de aprendre […] deit estre provee