improver

Plural: improvers

Noun

• One who makes something better or enhances its quality.
• someone devoted to the promotion of human welfare and to social reforms
• a component that is added to something to improve it
• Something that, or someone who, improves something.
• Specifically, a person who improves land or property, a landscaper.
• One who improves his or her performance, one who shows improvement (of individuals or groups).
• A substance added to cause improvement (especially to a foodstuff).
• A pad worn by women to make the dress hang properly.
• One who performs improv; an improviser.

Examples

• He considered himself an improver of game dynamics, always suggesting new Scrabble rules.

Synonyms

add-on, addition, do-gooder, humanitarian