What does batshit mean?
Batshit is a vulgar slang adjective used to describe someone or something as utterly crazy, deranged, or wildly irrational. It is most often encountered in the emphatic phrase 'batshit crazy', which became widespread in American colloquial speech before spreading through British usage via film, television, and political commentary. The word can describe a person's mental state ('he went completely batshit') or, more loosely, the sheer absurdity of an idea, plan, or situation ('a batshit conspiracy theory'). Its connotations are strongly negative but often darkly humorous, making it a staple of informal conversation, stand-up comedy, and irreverent journalism rather than formal writing. Etymologically it simply fuses 'bat' with 'shit', both ancient words of Germanic origin, though the compound itself is a twentieth-century American formation. Because of its obscenity, writers should reserve it for contexts where strong, comic register is appropriate — it is memorable precisely because it is shocking, expressive, and unmistakable in meaning.
adjectiveUtterly crazy or deranged; wildly irrational. A vulgar slang intensifier describing behaviour or ideas that are completely unhinged.
- Completely crazy or mentally unhinged (of a person).
- Wildly irrational, absurd, or extreme (of behaviour, ideas, or situations).
"His plan to sail across the Atlantic in a bathtub was completely batshit."
"She went batshit when she found out they'd sold her car without asking."
"The plot of that movie is absolutely batshit, and that's exactly why it works."
'Batshit crazy' entered mainstream speech largely through American politics and film — a compound of two old Anglo-Saxon words that somehow became one of modern English's most vivid insults.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of batshit
Batshit is an American English compound formed from 'bat' and 'shit', both of which trace back through Old English to Proto-Germanic roots. The base word 'shit' derives from Old English 'scitan' (to defecate), from Proto-Germanic *skit-, which also yields German 'Scheiße' and Dutch 'schijt'. The compound emerged as coarse American slang in the twentieth century and gained wide currency through the phrase 'batshit crazy'. Its exact date of first attestation is uncertain, though it appears in print by at least the mid-twentieth century and became mainstream by the 1990s and 2000s.
How batshit is actually used
Strongly informal and vulgar; generally avoided in formal writing and polite company, though common in casual speech, journalism, and comedy. The extended phrase 'batshit crazy' is far more frequent than the bare adjective. Despite the literal imagery of the compound, it carries no connection to bats themselves.