batshit

• bat shit
• bat-shit (adjective only)

Presumably from batty (“crazy”), itself from earlier have bats in one's belfry, from tendency of bats to fly around erratically. Possibly influenced by or derived from apeshit, particularly in phrase go apeshit.

• IPA^(key): /ˈbæt.ʃɪt/

• Audio (General Australian):

  (file)

• Hyphenation: bat‧shit
• Rhymes: -æt.ʃɪt

batshit (uncountable)

1. (vulgar, literally) Fecal matter produced by bats.

   Synonym: guano

2. (slang, vulgar) Extreme irrationality or unreasonableness, insanity, craziness.
   • 2023 November 15, Rajeev Syal, Peter Walker, Rowena Mason, Ben Quinn, quoting James Cleverly, “Rishi Sunak to bring in emergency law after supreme court’s Rwanda ruling”, in The Guardian‎, →ISSN:

     Yvette Cooper, the shadow home secretary, suggested Cleverly had previously privately referred to the Rwanda plan as “batshit”, a jibe not explicitly denied by Cleverly.

batshit (comparative more batshit, superlative most batshit)

1. (slang, vulgar) Extremely irrational or unreasonable, insane, crazy.

   Don't take any courses from that professor. She's completely batshit.

   • 1995, Nicholas Pileggi, Martin Scorsese, Casino, spoken by Nicky Santoro (Joe Pesci):

     And what the fuck are you doing on TV anyhow? You know I get calls from back home every fuckin day, they think you went batshit!

   • 2002, David Simon, The Wire‎:

     Those subpoenas went out today! The front office is gonna go batshit!

• batcrap
• batpoop
• crazy
• See also Thesaurus:insane.

batshit (not comparable)

1. (slang) Used as an intensifier, particularly for insane or synonyms.

   When we heard about it he went batshit nuts.

• Ba'thist, battish