Emily Dickinson Lexicon

OC-CA'SION-AL, a. [s as z; Fr. occasionnel.]

1. Incidental; casual; occurring at times, but not regular or systematic; made or happening as opportunity requires or admits. We make occasional remarks on the events of the age.
2. Produced by accident; as, the occasional origin of a thing. Brown.
3. Produced or made on some special event; as, an occasional discourse.