v. t. & i. [ 1st pref. un- + riddle. ] To read the riddle of; to solve or explain; as, to unriddle an enigma or a mystery. Macaulay. [ 1913 Webster ]
And where you can't unriddle, learn to trust. Parnell. [ 1913 Webster ]
n. One who unriddles. Lovelace. [ 1913 Webster ]