What is the Latin word for insolvable?

The usual Latin words for “insolvable” are inexplicābilis, īnsolūbilis, aenigma. The right choice depends on the sense; see the distinctions below.

English → Latin

“insolvable” in Latin

inexplicābilisinexplicable īnsolūbilisincontestable; indissoluble aenigmaa riddle, enigma; an allegory; a mystery

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

insolvable

(= inexplicable)(= inexplicable), inexplicabilis or difficilis et inexplicabilis (e.g., res, Cic.); insolubilis (Quint.); or by circumlocution with solvi non posse (solvere captiosa, Cic., aenigmata, Quint.).

Quick answer

What is the Latin word for insolvable?: The usual Latin words for “insolvable” are inexplicābilis, īnsolūbilis, aenigma. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.