Meaning

noun the exposure of an impostor or a fraud

verb expose or make accessible to some action or influence

verb make known to the public information that was previously known only to a few people or that was meant to be kept a secret

originFrom Middle English exposen, from Old French exposer (“to lay open, set forth”), from Latin expōnō (“set forth”), with contamination from poser (“to lay, place”). Doublet of expone and expound (via Old French espondre (“to set forth, explain”)), from the same Latin term.

Etymology from Wiktionary, CC BY-SA 3.0