Définitions
1.AdjectiveCharacterized by felicity.
2.AdjectiveAppropriate, apt, fitting.
3.AdjectiveAuspicious, fortunate, lucky.
4.AdjectiveCausing happiness or pleasure.
5.AdjectiveOf a sentence or utterance: semantically and pragmatically coherent; fitting in the context."This sentence is grammatical; it is just not felicitous."