felicity

Borrowed from Old French felicité, from Latin fēlīcitās (“fertility, fruitfulness; happiness, felicity; good fortune; success”), from fēlix (“happy; blessed, fortunate, lucky; fertile, fruitful; prosperous; auspicious, favourable”), ultimately from Proto-Indo-European *dʰeh₁(y)- (“to nurse, suckle”).[1]

felicity (countable and uncountable, plural felicities)

1. (uncountable) Happiness.

   Antonym: infelicity

   • 1814 July, [Jane Austen], chapter I, in Mansfield Park: A Novel. In Three Volumes, volume I, London: Printed for T[homas] Egerton, […], OCLC 39810224, page 2:

     […] Mr. and Mrs. Norris began their career of conjugal felicity with very little less than a thousand a year.

   • 1862, George Long, translation of Marcus Aurelius, Meditations, Book V:

     For two reasons then it is right to be content with that which happens to thee; the one, because it was done for thee and prescribed for thee, and in a manner had reference to thee, originally from the most ancient causes spun with thy destiny; and the other, because even that which comes severally to every man is to the power which administers the universe a cause of felicity and perfection, nay even of its very continuance.

2. (uncountable) An apt and pleasing style in speech, writing, etc.
3. (uncountable, semiotics, semiology) Reproduction of a sign with fidelity.

   The quotation was rendered with felicity.

4. (countable) Something that is either a source of happiness or particularly apt.
   • 2007 August 7, Joshua Ferris, “Table for two”, in The New York Times‎:

     The season’s main attraction, the felicities of the sun, dimmed in the light of our competition and our growing friendliness.

• felicity (disambiguation) on Wikipedia.Wikipedia