Definition of do-gooder in English English dictionary
One who advocates or performs what they believe to be the morally superior course of action, even in the face of overwhelming experience or factual evidence that its effect is only irrelevant or harmful
The Prohibition Act in the United States was an unsuccessful attempt by do-gooders to save people from the dangers of alcohol, whether they wanted to be saved or not.
disapproval If you describe someone as a do-gooder, you mean that they do things which they think will help other people, although you think that they are interfering. someone who helps people who are in bad situations, but who is annoying because their help is not needed - used to show disapproval