unsolve

Verb

unsolve (third-person singular simple present unsolves, present participle unsolving, simple past and past participle unsolved)

1. (obsolete) To solve.
   • Perchance, my Fancy would have bin so kinde, / T‘ unsolve the doubts of my perplexed minde.1631, Francis Quarles, The History of Samson

   Synonyms:

   ravel, resolve, work out, absolve, decipher, get to the bottom of, iron out, meliorate, puzzle out, reason out

2. To undo or remove the solution to a problem; to put something into an unsolved state.
   • “But I cannot allow you to use my cousin to solve or, I suppose, more precisely, to unsolve your case.”2001, Dave Rosi, One Good Deed
   • Ethiopia and the Generation That Unsolves Problems.2011, Solomon Belay Faris, (title)

   Synonyms:

   unresolve