n. Happiness; bliss; blessedness; a blissful or happy state.n. That which produces or promotes happiness; a felicitous circumstance or state of things; a source of happiness: most commonly in the plural.n. A skilful or happy faculty or turn; felicitous adroitness or propriety; a happy knack or choice; appropriateness: as, a rare felicity of phrase.n. An appropriate or happy turn of thought or expression.n. In astrology, a favorable aspect.n. Synonyms Blessedness, Bliss, etc. (see happiness); joy, comfort, blissfulness, success, good fortune.n. Aptness.