Felicitous

1. Characterized by felicity. Antonyms: **infelicitous, unfelicitous
   1. Appropriate, apt, fitting. Synonyms: **opportune, wealful (dialectal or obsolete)
   2. Auspicious, fortunate, lucky.
   3. Causing happiness or pleasure.
2. (linguistics) Of a sentence or utterance: semantically and pragmatically coherent; fitting in the context. Antonyms: **grammatical, unfelicitous