As
As conjunction - For the reason that.
Usage example: had his meals delivered to him as he couldn't navigate the icy sidewalk with his walker
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Synonyms for As
Since is a synonym for as in because topic. In some cases you can use "Since" instead the word "As" as a conjunction or an adjective or an adverb or a preposition, when it comes to topics like conjuction, part of speech. popular alternative
Since
Since conjunction - For the reason that.
Usage example: since you are already here, we might as well get the meeting started
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Synonyms for Since
As is a synonym for since in conjuction topic. You can use "As" instead the word "Since" as a conjunction or a preposition or an adjective or an adverb, if it concerns topics such as because. popular alternative
Mutual synonyms
Cite this Source
Since and As. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/as/since
As & Since. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/as/since>.
Since or As. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/as/since.
Google Ngram Viewer shows how "as" and "since" have occurred on timeline