"tameness, gentleness, mildness," c.1386, from L.
mansuetudo "tameness," from
mansuetus, pp. of
mansuescere "to tame," lit. "to accustom to the hand," from
manus "hand" (see
manual) +
suescere "to accustom, habituate," from PIE
*swdh-sko-, from base
*s(w)e- (see
idiom).