plural impossibilities
1
: something that is impossible : something that cannot be done or that cannot happen
The blizzard made travel an impossibility.
a logical/mathematical impossibility
2
: the quality or state of being impossible
the impossibility of knowing what the future will bring
Cite this Entry
“Impossibility.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/impossibility. Accessed 13 Sep. 2026.
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