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.
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, merveillous, "causing wonder, of wonderful appearance or quality," from Old French merveillos "marvelous, wonderful" (Modern French merveilleux), from merveille (see marvel (n.)). Weakened sense of "splendid, very nice" is by 1924. The adverbial sense of "wonderfully, surprisingly" (early 14c.) is archaic or obsolete. Related: Marvelously; marvelousness.
Latin, literally "wonderful to relate," from neuter of mirabilis "wonderful, marvelous, extraordinary; strange, singular" (see marvel (n.)) + ablative supine of dicere "to say, speak" (from PIE root *deik- "to show," also "pronounce solemnly"). The expression is found in Virgil. Mirable "wonderful, marvelous" was used in English 15c.
"exceedingly surprising or wonderful; of the nature of a miracle," mid-15c., from Old French miraculos (Modern French miraculeux), from Medieval Latin miraculosus, from Latin miraculum "miracle, marvel, wonder" (see miracle). Related: Miraculously (early 15c.); miraculousness.