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U_________
Definitions
not easily solved
Word origin
From un- + solvable. Piecewise doublet of insolvable and insoluble.
Used in a sentence
“Throughout this section, we shall assume the existence of finitely presented groups with unsolvable word problem.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
No curated clues for unsolvable yet.