ameliorationn.

amelioration (n.)1650s, from French amélioration, from Old French ameillorer (12c.), from a "to" (see ad-) + meillior (Modern French meìlleur) "to better," from Late Latin meliorare "improve," from Latin melior "better," perhaps originally "stronger," and related to Greek mala "very, very much," from PIE *mel- "strong, great" (see multi-).