Impossible
Impossible adjective - Incapable of being solved or accomplished.
Vain and impossible are semantically related. in forlorn topic. In some cases you can use "Vain" instead an adjective "Impossible", when it comes to topics like unachievable.
Nearby Words: impossibility, impossibly
Vain
Vain adjective - Producing no results.
Usage example: all their efforts to escape proved vain
Impossible and vain are semantically related. Sometimes you can use "Impossible" instead an adjective "Vain".
Both words in one sentence
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In the same vain, if you never get hit by a zombie throughout the whole game (pretty much impossible), Frank will still end up infected by Overtime.
Source: Video Game / Dead Rising -
The Shadow Dragon tries in vain to scatter his electric slime again; this, however, proves impossible due to the slime's enormous surface area, which prevents Rage from taking shelter.
Source: Anime / Dragon Ball GT
Cite this Source
Vain and Impossible. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/impossible/vain
Impossible & Vain. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/impossible/vain>.
Vain or Impossible. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/impossible/vain.
Google Ngram Viewer shows how "impossible" and "vain" have occurred on timeline