barking mad

adjective

variants or barking

ˈbär-kiŋ

chiefly British, informal

: not mentally sound : exhibiting a severely disordered state of mind

… an eccentric personality that verged on barking mad …—

Mitchell Owens

"Another one who thinks you're barking," said Ron, throwing a crumpled letter over his shoulder …—

J. K. Rowling

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Price at time of publish: $14.99 Himalayan Pet Supply Best Friend's Advent Calendar Dog Treats The dog-lover in your life will go barking mad for this exquisite set of all-natural treats made for furry friends. —

Sophie Dodd, Peoplemag, 29 Nov. 2023