bowl over
bowl over {v.}, {informal}
1. To knock down as if with a bowled ball.
The taxi hit him a glancing blow and bowled him over.
2. To astonish with success or shock with misfortune; upset; stun.
He was bowled over by his wife's sudden death.
The young actress bowled over everybody in her first movie.
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Source: A Dictionary of American Idioms