blissfulness

from WordNet (r) 3.0 (2006)

blissfulness
    n 1: a state of extreme happiness [syn: {bliss}, {blissfulness},
         {cloud nine}, {seventh heaven}, {walking on air}]

from The Collaborative International Dictionary of English v.0.48

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]