late 14c., from Old French reveler "reveal" (14c.), from Latin revelare "reveal, uncover, disclose," literally "unveil," from re- "opposite of" (see re-) + velare "to cover, veil," from velum "a veil" (see veil (n.)). Related: Revealed; revealing.
The actress won't reveal how old she is
God rarely reveal his plans for Mankind