Once and On one occasion

Once

Once adverb - At an earlier or previous time.

On one occasion is a synonym for once in formerly topic. In some cases you can use "On one occasion" instead an adverb "Once", when it comes to topics like in the past.

On one occasion

Definitions of Once not found.

Once is a synonym for on one occasion. You can use "Once" instead an adverb phrase "On one occasion".
Cite this Source
On one occasion and Once. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/once/on_one_occasion
Once & On one occasion. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/once/on_one_occasion>.
On one occasion or Once. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/once/on_one_occasion.