felicity

noun8

1. •
   The condition of being happy.
2. •
   Intense happiness.

   • [T]he wise Man gave his Testimony to this, as the just Standard of true Felicity, when he prayed to have neither Poverty nor Riches. — 1719
3. •
   An instance of intense happiness.
4. •
   An apt and pleasing style in speech, writing, etc.; (countable) an apt and pleasing choice of words.
5. •
   Something that is either a source of happiness or particularly apt.

   • […] to weare our selues & neuer rest, Untill we reach the ripest fruites of all, That perfect blisse and sole felicitie, The sweet fruition of an earthly crowne. — 1587
6. •
   (rare) Good luck; success; (countable) An instance of unexpected good luck; a stroke of luck; also, a lucky characteristic.
7. •
   Reproduction of a sign with fidelity.

   • The quotation was rendered with felicity.
8. •
   Period (as opposed to lifetime) utility.