on occasion Definition

occasion
noun

1. A particular event or happening, or the time at which it occurs.

Example: met on three occasions
Thesaurus: event, happening, occurrence, incident, affair, case, experience, instance, moment.
2. A special event or celebration.
3. A suitable opportunity or chance.

Thesaurus: opportunity, chance, opening.
4. A reason; grounds.

Example: have no occasion to be angry
Thesaurus: excuse, grounds, call, cause, motive, justification, provocation, reason.
5. An event which determines the time at which something happens, but which is not the actual cause of it.

verb

occasioned, occasioning
1. To cause something; to bring it about, especially incidentally.

Thesaurus: cause, induce, evoke, create, engender, bring about, generate, provoke, prompt, inspire, elicit, introduce.

Idiom: on occasion

As the need or opportunity arises.

From time to time; occasionally.
Thesaurus: sometimes, once in a while, seldom, hardly.

Idiom: rise to the occasion

See under rise.

Idiom: take occasion

To take advantage of an opportunity (to do something).

Etymology: 14c: French, or from Latin occasio opportunity or cause, from occidere, from oc- in the way of + cadere, casum to fall.