occasionally

The story

1. Middle English · inherited fromoccasionally
2. English todayoccasionally

From Middle English occasionally, occasionaly, occasyoneely, occasyonly, equivalent to occasional + -ly.

First known use, by meaning

• from 15th c. On occasion: at relatively infrequent intervals, from time to time, sometimes.
• 17th–18th c. On an occasion, accidentally, by chance.
• 15th–18th c. On the occasion of something else happening; incidentally, by the way.