Dictionary.com
Thesaurus.com
Synonyms

crackbrained

American  
[krak-breynd] / ˈkrækˌbreɪnd /

adjective

  1. foolish, senseless, or insane.


crackbrained British  
/ ˈkrækˌbreɪnd /

adjective

  1. insane, idiotic, or crazy

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of crackbrained

First recorded in 1625–35; crackbrain + -ed 3

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Shafer pictures Shapp as an "eccentric" whose proposals are either "crackbrained" or "crazy."

From Time Magazine Archive

Out of the quarrel was born the first Ironman Triathlon: 15 seemingly crackbrained humans on a 2.4-mile ocean swim followed by a 112-mile bike race followed by a 26.2-mile marathon run.

From Time Magazine Archive

To show business, the barter idea sounded as crackbrained as opening a theatre at the bottom of a well.

From Time Magazine Archive

Most of the State had always assumed that the canal was a crackbrained project which a few boosters promoted for profit or publicity.

From Time Magazine Archive

"Of all the cursed crackbrained schemes!" he muttered.

From Mrs. Fitz by Snaith, J. C.

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "crackbrained" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com