(as) mad as a March hare

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Related to as mad as a March hare: mad as a hatter

(as) mad as a March hare

1. Crazy or deranged; particularly eccentric. My grandfather came back from the war as mad as a March hare because of all the horrible things he saw. I'll be mad as a March hare if I have to deal with these screaming toddlers for much longer. My family thinks I'm as mad as a March hare just because I practice a form of alternative medicine using magnetic fields.
2. Particularly cross or angry. Mom was mad as a March hare after I dented her brand-new car. John gets as mad as a March hare when he starts losing.
See also: hare, mad, march
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

(as) mad as a March ˈhare

(informal) (of a person) crazyA March hare refers to a hare (= an animal like a large rabbit) that behaves very strangely in the breeding season.
See also: hare, mad, march
Farlex Partner Idioms Dictionary © Farlex 2017

mad as a

hatter/March hare
Crazy; mentally deranged.
See also: mad
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

mad as a March hare

Crazy. According to folklore, hares behave as though they're “sparring” with other hares and leaping around for no discernible reason during their breeding season. Their breeding season in Europe begins during the month of March.
See also: hare, mad, march
Endangered Phrases by Steven D. Price Copyright © 2011 by Steven D. Price
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