Editor, at times

• Change maker
• One changing a bill
• Editor, in a way
• Constitution modifier, e.g
• Bill of Rights writer, e.g.
• Unexpectedly named by Queen, one changing for the better?
• Person who makes change

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Amender \A*mend"er\, n. One who amends.

Wiktionary Word definitions in Wiktionary
n. One who amends.