Reveal
late Middle English: from Old French reveler or Latin revelare, from re- ‘again’ (expressing reversal) + velum ‘veil’.
wiktionary
From Middle English revelen(“to reveal”), from Middle French reveler, from Old French, from Latin revēlāre(“to reveal, uncover”), from re-(“back, again”) + vēlāre(“to cover”), from vēlum(“veil”).
etymonline
reveal (v.)
c. 1400, revelen, "disclose, divulge, make known (supernaturally or by divine agency, as religious truth)," from Old French reveler "reveal" (14c.), from Latin revelare "reveal, uncover, disclose," literally "unveil," from re- "back, again," here probably indicating "opposite of" or transition to an opposite state (see re-) + velare "to cover, veil," from velum "a veil" (see veil (n.)). Related: Revealed; revealer; revealing. Meaning "display, make clear or visible, expose to sight" is from c. 1500.
