allegorist, annotator, cicerone, clarifier, commentator, critic, cryptanalyst, cryptographer, cryptologist, decoder, definer, demonstrator, demythologizer, diaskeuast, dragoman, editor, emendator, emender, euhemerist, exegesist, exegete, exegetist, explainer, explicator, exponent, expositor, expounder, go-between, guide, hermeneut, interpreter, lexicographer, metaphrast, oneirocritic, paraphrast, scholiast, textual critic