Either
Either adverb - In addition to what has been said.
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Synonyms for Either
If and either are semantically related. In some cases you can use "If" instead a conjunction "Either".
If
If noun - Something taken as being true or factual and used as a starting point for a course of action or reasoning.
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Synonyms for If
Cite this Source
If and Either. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/either/if
Either & If. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/either/if>.
If or Either. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/either/if.
Google Ngram Viewer shows how "either" and "if" have occurred on timeline