'Blissfulness' definitions:

Definition of 'blissfulness'

From: WordNet
noun
A state of extreme happiness [syn: bliss, blissfulness, cloud nine, seventh heaven, walking on air]

Definition of 'Blissfulness'

From: GCIDE
  • Blissful \Bliss"ful\, a. Full of, characterized by, or causing, joy and felicity; happy in the highest degree. "Blissful solitude." --Milton. -- {Bliss"ful*ly}, adv. -- {Bliss"ful*ness}, n. [1913 Webster]