c. 1300, merivelle, "a miracle; a thing, act, or event which causes astonishment," also "wonderful story or legend," from Old French merveille "a wonder, surprise, miracle," from Vulgar Latin *miribilia (source also of Spanish maravilla, Portuguese maravilha, Italian maraviglia), altered from Latin mirabilia "wonderful things," from noun use of neuter plural of mirabilis "wonderful, marvelous, extraordinary; strange, singular," from mirari "to wonder at," from mirus "wonderful" (see smile (v.)). A neuter plural treated in Vulgar Latin as a feminine singular. Related: Marvels. The Marvel comics brand dates to 1961.
c. 1300, merveillen, of persons, "to be filled with wonder," from Old French merveillier "to wonder at, be astonished," from merveille (see marvel (n.)). Related: Marveled; marvelled; marveling; marvelling.