brainfart: meaning, definition, pronunciation and examples
C1 (Advanced/Upper Intermediate) - Common in informal speech, rare in formal contexts.Informal, colloquial, slightly humorous/vulgar. Considered slang and potentially offensive in very formal or polite company due to the second element ('fart').
Quick answer
What does “brainfart” mean?
A brief, sudden mental lapse or failure.
Audio
Pronunciation
Definition
Meaning and Definition
A brief, sudden mental lapse or failure; an instance of temporarily forgetting something obvious or being unable to think clearly.
A momentary, often humorous, breakdown in cognitive function where one fails to recall simple information, perform a routine task, or articulate a thought coherently. It implies a temporary 'glitch' in normal mental processing.
Dialectal Variation
British vs American Usage
Differences
The term is understood and used in both varieties, but is arguably more prevalent in American English. In the UK, synonyms like 'mind blank' or 'mental block' might be slightly more common in equivalent informal registers.
Connotations
In both varieties, it is casual and slightly irreverent. The vulgarity of 'fart' is softened by the humorous context, but it remains unsuitable for formal settings.
Frequency
Moderately common in casual spoken English, especially among younger and middle-aged adults. Rare in writing except in direct speech, blogs, or very informal digital communication.
Grammar
How to Use “brainfart” in a Sentence
[Subject] has/had a brainfart.It was just a brainfart.I'm having a brainfart (on/about [topic]).Vocabulary
Collocations
Examples
Examples of “brainfart” in a Sentence
noun
British English
- I had a complete brainfart and called my new boss by my old boss's name.
- Pardon my brainfart; what was I just saying?
American English
- Wait, what's your address again? I'm having a brainfart.
- It was just a brainfart—I meant to say 'left,' not 'right.'
Usage
Meaning in Context
Business
Highly unlikely, except in very casual, peer-to-peer conversation ('Sorry team, had a brainfart—the figures are on the next slide').
Academic
Virtually never used. 'Lapse in concentration' or 'cognitive error' would be appropriate.
Everyday
Primary context. Used among friends, family, in relaxed workplaces. ('What's your pin? Oh god, brainfart... 1234? No...').
Technical
Not used in technical fields like neuroscience or computing in a serious sense. Might be used jokingly by IT staff describing a minor system hiccup.
Vocabulary
Synonyms of “brainfart”
Strong
Neutral
Watch out
Common Mistakes When Using “brainfart”
- Using it in formal writing or presentations.
- Overusing it to describe genuine forgetfulness, which can sound like making excuses.
- Misspelling as 'brain fart' (two words) is very common and often accepted, though some dictionaries list it as a single compound.
FAQ
Frequently Asked Questions
It is informal and mildly vulgar due to the word 'fart.' It is not highly offensive but is inappropriate in formal, polite, or professional settings. Use with caution around people who might be sensitive to crude language.
Very rarely and non-standardly (e.g., 'I totally brainfarted on her name'). Its standard and almost exclusive part of speech is as a noun ('I had a brainfart').
Both describe memory lapses. 'Senior moment' humorously implies the lapse is due to age, while 'brainfart' is age-neutral and focuses on the sudden, inexplicable nature of the lapse. 'Brainfart' is also more informal and crude.
Both 'brainfart' (closed compound) and 'brain fart' (open compound) are widely seen. Dictionaries may differ, and language style guides may prefer one form. In very formal writing, you should avoid the term altogether.
A brief, sudden mental lapse or failure.
Brainfart is usually informal, colloquial, slightly humorous/vulgar. considered slang and potentially offensive in very formal or polite company due to the second element ('fart'). in register.
Brainfart: in British English it is pronounced /ˈbreɪn.fɑːt/, and in American English it is pronounced /ˈbreɪn.fɑːrt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “The server had a brainfart and deleted my file.”
- “He stared at the simple equation, victim of a sudden brainfart.”
Learning
Memory Aids
Mnemonic
Imagine a thought as a balloon in your brain. A 'brainfart' is when that balloon suddenly pops or floats away before you can grab the string.
Conceptual Metaphor
THE MIND IS A COMPUTER (that just crashed or glitched). THINKING IS A PHYSICAL PROCESS (that experienced a gaseous, unintentional release).
Practice
Quiz
In which context would using the word 'brainfart' be MOST appropriate?