Dubious
Dubious adjective - Not likely to be true or to occur.
Usage example: made the dubious claim of being of royal blood
Impossible and dubious are semantically related. In some cases you can use "Impossible" instead an adjective "Dubious".
Impossible
Impossible adjective - Incapable of being solved or accomplished.
Usage example: fitting everything in my backpack seemed an impossible task
Dubious and impossible are semantically related. Sometimes you can use "Dubious" instead an adjective "Impossible".
Nearby Words: impossibility, impossibly
Mutual synonyms
Related pairs
- questionable and dubious
- questionable and impossible
- doubtful and dubious
- doubtful and impossible
- implausible and dubious
- implausible and impossible
- incredible and dubious
- incredible and impossible
- unbelievable and dubious
- unbelievable and impossible
- fantastic and dubious
- fantastic and impossible
- unconvincing and dubious
- unconvincing and impossible
Both words in one sentence
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If she was in love with anyone, she was in love with him (but he was married, until his wife died under dubious circumstances that made their marriage impossible).
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In the end, definition is impossible, and identifying a Tomboy comes down to "knowing it when one sees it" (though the quality of this "knowledge" is dubious).
Source: Tomboy -
Anatomically Impossible Sex: Jay's stories about sex get more and more dubious as time goes by.
Source: Series / The Inbetweeners
Cite this Source
Impossible and Dubious. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/dubious/impossible
Dubious & Impossible. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/dubious/impossible>.
Impossible or Dubious. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/dubious/impossible.
Google Ngram Viewer shows how "dubious" and "impossible" have occurred on timeline