melioration

Noun (3)

1. the act of relieving ills and changing for the betterSynonyms: ameliorationbettermentType of improvement
2. a condition superior to an earlier condition“the new school represents a great improvement”Synonyms: improvementType of condition, statusKinds development, renovation, betterment, reformation
3. the linguistic process in which over a period of time a word grows more positive in connotation or more elevated in meaningType of drift