'Entertainingly' definitions:

Definition of 'entertainingly'

(from WordNet)
adverb
In an entertaining manner; "Byron's consumed memoirs possessed the merit of being well and entertainingly written"

Definition of 'Entertainingly'

From: GCIDE
  • Entertaining \En`ter*tain"ing\, a. Affording entertainment; pleasing; amusing; diverting. -- {En`ter*tain"ing*ly}, adv. -- {En`ter*tain"ing*ness}, n. [1913 Webster]