Once
Once adjective - Having been such at some previous time.
Usage example: the once child star is now a lawyer in the entertainment industry
Past
Past adjective - Having been such at some previous time.
Usage example: a past editor of the newspaper
Mutual synonyms
Both words in one sentence
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Once More with Feeling: Shinji feels so guilty for letting everyone die in the original timeline than back in the past he spends the whole time trying to help other people.
Source: Chronic Hero Syndrome - Once More with Feeling consists in Shinji going back to the past and trying to fix the monumental mess that the original timeline was.
Source: Fix Fic - By the time the events of the original game play out (after being Ret Canon'd by the movie), not only has evil already won once, but has been doing so for the past 500 years or so.
Source: Evil Only Has to Win Once
Cite this Source
Past and Once. (2016). Retrieved 2025, February 15, from https://thesaurus.plus/related/once/past
Once & Past. N.p., 2016. Web. 15 Feb. 2025. <https://thesaurus.plus/related/once/past>.
Past or Once. 2016. Accessed February 15, 2025. https://thesaurus.plus/related/once/past.
Google Ngram Viewer shows how "once" and "past" have occurred on timeline