From Wiktionary, the free dictionary

From fitting +‎ -ly.

fittingly (comparative more fittingly, superlative most fittingly)

1. In a fitting manner.

   • 2011 October 29, Phil McNulty, “Chelsea 3 - 5 Arsenal”, in BBC Sport‎^[1]:

     And Van Persie fittingly had the final word with seconds to go by escaping Chelsea's defence once more to thump high past Cech in front of Arsenal's joyous supporters.