brain fart: meaning, definition, pronunciation and examples
C1/C2Informal, Slang, Humorous, Slightly Vulgar
Quick answer
What does “brain fart” mean?
A temporary mental lapse or sudden failure to think clearly, resulting in forgetfulness or a ridiculous statement.
Audio
Pronunciation
Definition
Meaning and Definition
A temporary mental lapse or sudden failure to think clearly, resulting in forgetfulness or a ridiculous statement.
A brief, unexpected, and often amusing failure of cognition, memory, or speech. Not a medical condition but a colloquial term for a common human experience.
Dialectal Variation
British vs American Usage
Differences
Understood in both varieties. Slightly more established and common in American English.
Connotations
Equally informal/vulgar in both. Considered juvenile or impolite in formal contexts.
Frequency
More frequently encountered in AmE media and casual speech. In BrE, alternatives like 'mental blank' or 'senior moment' might be preferred in mixed company.
Grammar
How to Use “brain fart” in a Sentence
to have a brain fartThat was a brain fart.(I) just brain farted.Vocabulary
Collocations
Examples
Examples of “brain fart” in a Sentence
verb
British English
- I completely brain farted and called him by the wrong name.
- Sorry, I'm brain farting today—what's your PIN again?
American English
- I brain farted during the interview and forgot the CEO's name.
- Don't ask me math now, I just brain farted.
adjective
British English
- It was a real brain-fart moment when I poured orange juice on my cereal.
American English
- I had a brain-fart incident and left my keys in the fridge.
Usage
Meaning in Context
Business
Highly inappropriate. Use 'oversight', 'lapse', or 'temporary error'.
Academic
Never used in formal writing. Use 'cognitive lapse' or 'memory error'.
Everyday
Common in casual conversation among friends, often for self-description.
Technical
Not a clinical term. In psychology/neuroscience, terms like 'prospective memory failure' or 'tip-of-the-tongue phenomenon' are used.
Vocabulary
Synonyms of “brain fart”
Vocabulary
Antonyms of “brain fart”
Watch out
Common Mistakes When Using “brain fart”
- Using it in formal writing or presentations.
- Using it to describe a serious cognitive impairment.
- Misspelling as 'brainfart' (sometimes accepted) or 'brain fart'.
- Overusing the term, making speech sound immature.
FAQ
Frequently Asked Questions
It can be. It's informal and uses a mildly vulgar term ('fart'). It's generally acceptable in very casual settings among peers, especially as self-deprecation, but avoid using it to describe someone else's mistake, in formal contexts, or with people you don't know well.
A 'senior moment' humorously attributes a memory lapse to age, while a 'brain fart' is age-agnostic and focuses on the sudden, silly nature of the lapse. 'Senior moment' is often considered slightly less vulgar.
Yes, in very informal speech (e.g., 'I totally brain farted'). This is more common in American English and is considered non-standard but understood.
Yes. Depending on context, use: 'mental block', 'had a blank', 'lapse in concentration', 'temporary oversight', or simply 'sorry, my mind went blank'.
A temporary mental lapse or sudden failure to think clearly, resulting in forgetfulness or a ridiculous statement.
Brain fart is usually informal, slang, humorous, slightly vulgar in register.
Brain fart: in British English it is pronounced /ˈbreɪn ˌfɑːt/, and in American English it is pronounced /ˈbreɪn ˌfɑːrt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “to have a senior moment”
- “to draw a blank”
- “a mind like a sieve”
Learning
Memory Aids
Mnemonic
Imagine a cartoon brain letting out a little 'toot' of confusion instead of a smart idea.
Conceptual Metaphor
THE MIND IS A BODY (that can have malfunctions/emissions). THINKING IS A CLEAR PATH (a 'fart' is an obstruction/cloud).
Practice
Quiz
In which context would using the term 'brain fart' be LEAST appropriate?