verb [with object] Make minor changes to (a text, piece of legislation, etc.) in order to make it fairer or more accurate, or to reflect changing circumstances: Improve the texture or fertility of (soil):
ー オックスフォード英英辞典より引用
例文
Did she amend her original will later on?
彼女はあとで元々の意見を変えましたか?
To amend the Constitution, voters must approve the measure in a referendum.