(obsolete) On the occasion of something else happening; incidentally, by the way. / From time to time; sometimes; at relatively infrequent intervals. / (obsolete) By chance; accidentally.

Occurring or appearing irregularly from time to time, but not often. / Created for a specific occasion. / Intended for use as the occasion requires. / Acting in the indicated role from time to time.

A person who does something only occasionally.

plural of occasional

(philosophy, uncountable) A metaphysical doctrine that holds that all events are occasioned (caused) by God. / (linguistics, countable) A nonce word.

The quality of being occasional.

The quality of being occasional.

plural of occasionalism

present participle of occasionate

simple past tense and past participle of occasionate