Synonyms for decipher

decode, interpret, read, make clear, translate, spell, unravel, reveal, unfold, elucidate, solve, interpret by use of a key, find the key to, disentangle, expound, render, construe, explain, unscramble, decrypt, make out, figure out, make head or tail of*, break (a code)*, crack*, dope out*; see also solve, translate 1.

Antonyms misunderstand*, fail to solve, misconstrue.