Meanings
comparative more crackbrained · superlative most crackbrained · alternative crack-brained · alternative crack brained
- Idiotic.
He shook his head; the milk pail was still at his feet. «You always been a crackbrained sonofabitch anyhow.»
1957 September 5, Jack Kerouac, On the Road, New York, N.Y.: Viking Press, →OCLC4 more examples
In order to ſet ſo hopeful a Genius right in this matter, vve have ſent you an anſvver to the ill-grounded Sophiſms of thoſe crack brain'd fellovvs, and likevviſe an eaſy mechanical explication of Perception or Thinking.
1713–1714 (date written), Martinus Scriblerus [pseudonym; Alexander Pope et al.], “Memoirs of the Extraordinary Life, Works, and Discoveries of Martinus Scriblerus”, in The Works of Alexander Pope Esq. […], volume VI, London: […] J[ohn] and P[aul] Knapton […], published 1751, →OCLC, chapter XII (How Martinus Endeavoured to Find Out the Seat of the Soul, and of His Correspondence with the Free-thinkers), page 151By degrees, Jean Paul began to be considered not a strange, crackbrained mixture of enthusiast and buffoon, but a man of infinite humour, sensibility, force, and penetration.
1827, Thomas Carlyle, “Jean Paul Friedrich Richter”, in R[alph] W[aldo] E[merson], editor, Critical and Miscellaneous Essays: […], volume I, Boston, Mass.: James Munroe and Company, published 1838, →OCLC, pages 7–8Could it be, after all, that the whole story was true, and the writing on the sherd was not a forgery, or the invention of some crack-brained, long-forgotten individual?
1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887, →OCLCRalph is a downtrodden, debt-ridden mailman who lives on a diet of Jeopardy, Wheel of Fortune, and The People's Court; dreams of sudden quiz-show success; and (like his namesake, Kramden) keeps hatching crackbrained get-rich schemes (his latest is a battery-operated jump rope).
1988 February 5, Lawrence Bommer, “The Fan Club”, in Chicago ReaderSynonyms: birdbrained, addlebrained, addlepated, airheaded, bee-brained, beef-witted, soft, beefheaded
Synonyms & antonyms
adjectiveIdiotic.
More synonyms by meaning
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
From crack + brained. The word is centuries old, and the original imagery is of a brain that is cracked (broken), but the advent of crack cocaine produced a new surface analysis whereby the word now also suggests a crack(rock)-addled brain. But even with that difference in referents, cognation is involved regardless.
Full word history & related roots →Translations
Bulgarian слабоумен, побъркан
- слабоумен (slaboumen)idiotic
- побъркан (pobărkan)idiotic
Polish pomylony, stuknięty
- pomylonyidiotic
- stukniętyidiotic
Cite this entry
crackbrained. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/crackbrained
“crackbrained.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/crackbrained. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “crackbrained,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/crackbrained.
Source: crackbrained on Wiktionary, CC BY-SA 4.0.