Improbable
Improbable adjective - Not likely to be true or to occur or to have occurred.
Usage example: an improbable event
Supposed and improbable are semantically related. In some cases you can use "Supposed" instead an adjective "Improbable".
Nearby Words: improbability, improbably
Supposed
Supposed adjective - Mistakenly believed.
Usage example: the supposed existence of ghosts
Improbable and supposed are semantically related. Sometimes you can use "Improbable" instead an adjective "Supposed".
Mutual synonyms
Both words in one sentence
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Lethal Joke Item: Some bosses are only supposed to be killable by using highly improbable inventory items on them.
Source: Video Game / Kingdom of Loathing - Improbable Weapon User Anything can be used as a weapon, regardless of what it is supposed to be.
Source: Video Game Items and Inventory -
Improbable Power Discrepancy: The Dead Rising series is all over the place about how tough a normal human is supposed to be.
Source: Video Game / Dead Rising 2
Cite this Source
Supposed and Improbable. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/improbable/supposed
Improbable & Supposed. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/improbable/supposed>.
Supposed or Improbable. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/improbable/supposed.
Google Ngram Viewer shows how "improbable" and "supposed" have occurred on timeline