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3. be as mad as a hornet

be as mad as a hornet

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be as mad as a hornet

To be very angry. Primarily heard in US. Mom was as mad as a hornet after I dented her brand-new car.

See also: hornet, mad

be as mad as a hornet

  (American)

to be very angry

Usage notes: A hornet is a large insect which stings people.

He was as mad as a hornet when he heard what she said about him.

See also: hornet, mad