Synonyms of improver

Noun

1. humanitarian, do-gooder, improver, benefactor, helper

usage: someone devoted to the promotion of human welfare and to social reforms

2. addition, add-on, improver, component, constituent, element

usage: a component that is added to something to improve it; "the addition of a bathroom was a major improvement"; "the addition of cinnamon improved the flavor"

Definition and meaning of improver (Dictionary)