Past
Past preposition - Subsequent to in time or order.
Usage example: it's ten minutes past six o'clock
Since and past are semantically related In some cases you can use "Since" instead the word "Past" as a preposition or an adverb.
Since
Since adverb - Earlier than the present time.
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Synonyms for Since
Past and since are semantically related in because topic. Sometimes you can use "Past" instead the word "Since" as a preposition or an adverb.
Both words in one sentence
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Though many cases in real life, bullies at some point wake up and realize what a monster they had been, though at that point the kids they tormented were long in the past and since moved away to who knows where?
Source: Web Comic / Ozy and Millie -
Now, this doesn't negate the need for time travel; instead that Bad Future remains, but without Link since he's back in the past.
Source: Temporal Paradox - Vivio is especially fun since she managed to be a Jerkass to Jerkass Nanoha when she went back to the past.
Source: Jerkass / Web Comics
Cite this Source
Since and Past. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/past/since
Past & Since. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/past/since>.
Since or Past. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/past/since.
Google Ngram Viewer shows how "past" and "since" have occurred on timeline