cordially

From cordial +‎ -ly. Compare Middle English cordyally (“by heart”).

• (General American) IPA^(key): /ˈkɔɹd͡ʒəli/
• (Received Pronunciation) IPA^(key): /ˈkɔːdɪəli/

• Audio (Southern England)

  (file)

• Hyphenation: cor‧dial‧ly

cordially (comparative more cordially, superlative most cordially)

1. In a cordial, warm, friendly or heartfelt manner.
   • 1893, Royal Geographical Society, The Geographical Journal, London:

     I may ask you, then, cordially to thank Sir George Goldie for all that he has done for the Society.

   • 1898, Ivan Sergeevich Turgenev, Tourguéneff and his French Circle

     My dear Monsieur Durand,—I am sending you[....]

     Ever most cordially yours,

     Iv. Tourguéneff.

   • 1951 December, Michael Robbins, “John Francis's "History of the English Railway"”, in Railway Magazine, page 800:

     In the thick of the railway controversies of his day, Francis naturally had his prejudices. It seems that he cordially disliked the aristocracy in general.

   • 1961 February, “Society column: Branch Line Society”, in Trains Illustrated, page vii:

     A rail tour on Sunday, March 12, in which non-members are cordially invited to participate, will leave St. Pancras at approximately 2 p.m. [...].

As indicated above, the term is often used in letter closings.