The phrase in a good cause or for a good cause describes an action or contribution that is valuable because it helps others or supports a worthwhile purpose.
When someone says an effort, event, or donation is for a good cause, it suggests that the outcome benefits people or serves the public interest rather than personal gain.
Example: “They organized the charity concert for a good cause.”
Author’s summary: The phrase highlights actions or contributions made to help others or serve meaningful, altruistic purposes.