False
False adjective - Lacking in natural or spontaneous quality.
Usage example: so much of the sympathy that the widow received was false and hypocritical, since it came from people who never liked her husband in the first place
Unrealistic and false are semantically related. In some cases you can use "Unrealistic" instead an adjective "False".
Unrealistic
Unrealistic adjective - Not realistic.
Usage example: unrealistic expectations
False and unrealistic are semantically related. Sometimes you can use "False" instead an adjective "Unrealistic".
Both words in one sentence
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Arthur's unerring accuracy is also unrealistic; while dogs are used to scent out people or items all the time, they do give false positives.
Source: Videogame / Dark Tales -
Given that he previously based his life on a faith that turned out to be false, it's not unrealistic that he's unwilling to give it a second chance.
Source: Series / Dominion -
Even within the framework of Kayfabe, announcers have at times been required to make completely false, unrealistic and utterly not believable statements.
Source: Blatant Lies
Cite this Source
Unrealistic and False. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/false/unrealistic
False & Unrealistic. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/false/unrealistic>.
Unrealistic or False. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/false/unrealistic.
Google Ngram Viewer shows how "false" and "unrealistic" have occurred on timeline