adjective bat·shit \ˈbat-ˌshit\

Definition of batshit

vulgar slang

  1. :  very irrational, excited, or angry :  1crazy Some say he's smart and some say he's permanently batshit—but they don't say it to his face … . Besides, most truly talented people are, well, strange. — Linda Ellerbee, And So It Goes, 1986 This tended to drive the real Hollywood people … absolutely batshit. — Jay McInerney, The Guardian (London), 3 Nov. 1996 —often used with go … she shows you that you are not alone in the world, … lets you know that everyone goes batshit sometimes, and that recovering from it can lead you to expectations and views that translate to a new life, a better life. — Sridhar Pappu, The Atlantic, January/February 2005


adverb Joey is aware that there are a lot of people, … who are just batshit crazy. — David Brooks, Weekly Standard, 28 Apr. 2003 … over the years he's been called everything from ruthless to batshit insane … — Seth Mnookin, Vanity Fair, December 2008

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!


First Known Use of batshit


Seen and Heard

What made you want to look up batshit? Please tell us where you read or heard it (including the quote, if possible).


a trip made at another's expense

Get Word of the Day daily email!