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
Whether is a synonym for if. In some cases you can use "Whether" instead the word "If" as a conjunction or an adverb. popular alternative
Whether
If is a synonym for whether in either topic. You can use "If" instead the word "Whether" as a conjunction or an adverb.
Mutual synonyms
Cite this Source
Whether and If. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/if/whether
If & Whether. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/if/whether>.
Whether or If. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/if/whether.
Google Ngram Viewer shows how "if" and "whether" have occurred on timeline