unriddle

verb

1. (transitive)To figure out the answer to (a riddle).
2. (broadly, transitive)To solve (a perplexing problem).

   “It vvill be found, vvhen the Myſterie of iniquitie ſhall be unriddled, that, as they vvere their ſpavvn the Anabaptiſts, the obſtructers of our Doctrinal Reformation, ſo, they are by their Miſſionaries ſent unto Corners and Hillie Countreys the obſtructers of our practical.”

   “On the right hand of [a wax figure representing] Popery sat Judaism, represented by an old man embroidered with phylacteries, and distinguished by many typical figures, which I had not skill enough to unriddle.”

   “'I your Enemy, Sir!' ſays he, vvith much Amazement, and ſome Sternneſs in his Look. 'Nay, be not angry,' ſaid Benjamin, 'for I promiſe you I am not. You are perfectly innocent of having intended me any VVrong; for you vvas then an Infant; but I ſhall, I believe, unriddle all this the Moment I mention my Name. Did you never hear, Sir, of one Partridge, vvho had the honour of being reputed your Father, and the Misfortune of being ruined by that Honour?'”