'Sportingly' definitions:

Definition of 'sportingly'

From: WordNet
adverb
So as to be sporting; in a sporting manner [ant: unsportingly]

Definition of 'Sportingly'

From: GCIDE
  • Sportingly \Sport"ing*ly\, adv. In sport; sportively. [1913 Webster]
  • The question you there put, you do it, I suppose, but sportingly. --Hammond. [1913 Webster]