The definition of steal someone’s thunder is:
(verb) to take credit for something that someone else did
My partner stole my thunder when he told the professor that he did all the work on the presentation.
The businessman alwayssteals his partner’s thunder by using his ideas.
A: I think we should do our presentation about Stem Cell Research.
B: Great idea! I’m going to tell the professor!
A: I should tell the professor because it was my idea. Stop stealing my thunder!
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