Steal someone's thunder
Meaning
Take credit for someone else's idea.
Usage
Used when credit is unfairly taken.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Theater critics stole sound effects from playwright John Dennis.
Origin story from an 18th-century playwright.