“Mansuetude” developed through Late Middle English and Old French, but it originated in the Latin word “mansuetus” (“gentle, tame”), which combines the words “manus” (“hand”) and “suetus” (“accustomed”). While “mansuetude” is an archaic synonym for “gentleness,” other words that use the “manus” root are common in modern English: “manicure” and “manipulation,” for example. However, other “man-” words have different roots. “Maniac,” for one, comes from the Greek “mainesthai,” which means “be mad,” and “manifest” comes from the Latin “manifestare,” which means “make public.”