There are two verbs with different meanings and different etymological origin. Reveal comes from the Latin verb revelo, re velum, unveil, take the veil back, manifest, reveal, discover, expose, report something secret or ignored. VELUM veli means fabric, curtain, sail of a boat. However rebel ( was ) it comes from rebello ( re beautiful ) renew the war, rebel, stand up against something, revolt, resist. face, insubordinar be, protest.