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crackbrain: meaning, definition, pronunciation and examples

Rare/Archaic
UK/ˈkrakbreɪn/US/ˈkrækˌbreɪn/

Informal, Dated, Pejorative

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Quick answer

What does “crackbrain” mean?

A person who is foolish, eccentric, or mentally unsound.

Audio

Pronunciation

Definition

Meaning and Definition

A person who is foolish, eccentric, or mentally unsound; a madman or simpleton.

A term of contempt for someone whose ideas or behavior are perceived as wildly irrational, nonsensical, or dangerously foolish.

Dialectal Variation

British vs American Usage

Differences

Equally archaic in both varieties. No significant regional difference in meaning or usage.

Connotations

Carries a strong pejorative and dismissive connotation. In modern use, it might be employed humorously or in period dialogue rather than as a serious insult.

Frequency

Extremely low frequency in contemporary corpora for both BrE and AmE. More likely encountered in literature from the 16th-19th centuries.

Grammar

How to Use “crackbrain” in a Sentence

[Determiner] + crackbrain[Adjective] + crackbrain

Vocabulary

Collocations

strong
old crackbrainraving crackbrainpoor crackbrain
medium
such a crackbrainthat crackbrainutter crackbrain
weak
crackbrain ideacrackbrain schemecrackbrain notion

Examples

Examples of “crackbrain” in a Sentence

verb

British English

  • [No standard verb use]

American English

  • [No standard verb use]

adverb

British English

  • [No standard adverb use]

American English

  • [No standard adverb use]

adjective

British English

  • [Rare/Non-standard. 'Crackbrained' is the adjectival form.]

American English

  • [Rare/Non-standard. 'Crackbrained' is the adjectival form.]

Usage

Meaning in Context

Business

Not used.

Academic

Not used, except in historical/linguistic analysis.

Everyday

Virtually never used in contemporary everyday speech. If used, it would be for humorous or archaic effect.

Technical

Not used in psychology or medicine due to its pejorative and unscientific nature.

Vocabulary

Synonyms of “crackbrain”

Vocabulary

Antonyms of “crackbrain”

sagegeniusrationalistlucid person

Watch out

Common Mistakes When Using “crackbrain”

  • Using it as a modern, serious insult for mental illness (archaic/offensive).
  • Confusing it with 'crackpot' (which is also dated but slightly more modern).
  • Trying to use it as a verb or adjective (it is primarily a noun).

FAQ

Frequently Asked Questions

No, it is considered archaic. You might find it in historical fiction or as a deliberate, humorous archaism, but it is not part of modern active vocabulary.

Both mean a crazy or eccentric person. 'Crackbrain' is older (16th century) and rarer. 'Crackpot' (late 19th century) is also dated but was more common in 20th-century usage.

Yes. While archaic, it is a pejorative term mocking someone's mental state or sanity. It is dismissive and insulting, and its use regarding actual mental illness is highly offensive.

Not standardly. The adjectival form is 'crackbrained' (e.g., 'a crackbrained scheme'), which is also archaic.

A person who is foolish, eccentric, or mentally unsound.

Crackbrain is usually informal, dated, pejorative in register.

Crackbrain: in British English it is pronounced /ˈkrakbreɪn/, and in American English it is pronounced /ˈkrækˌbreɪn/. Tap the audio buttons above to hear it.

Phrases

Idioms & Phrases

  • “[No common modern idioms. Historical use as a standalone noun.]”

Learning

Memory Aids

Mnemonic

Think of a cracked ceramic bowl – it's damaged and doesn't work properly. A 'crackbrain' has a mind perceived as similarly damaged or broken.

Conceptual Metaphor

THE MIND IS A CONTAINER (that can be cracked/broken).

Practice

Quiz

Fill in the gap
In the historical novel, the villagers shunned the old hermit, calling him a harmless but daft .
Multiple Choice

'Crackbrain' is best described as:

crackbrain: meaning, definition, pronunciation and examples | Lingvocore