blue-arsed fly: meaning, definition, pronunciation and examples
Low (as a full phrase, primarily in fixed simile).Informal, colloquial, mildly vulgar.
Quick answer
What does “blue-arsed fly” mean?
A literal (but colourful) name for a fly, sometimes said to be a bluebottle fly, but often used figuratively.
Audio
Pronunciation
Definition
Meaning and Definition
A literal (but colourful) name for a fly, sometimes said to be a bluebottle fly, but often used figuratively.
In figurative use, a person who is moving about frantically or acting in a busy, agitated, and disorganized manner, especially when under pressure. The phrase 'like a blue-arsed fly' describes chaotic, headless, or ineffective busyness.
Dialectal Variation
British vs American Usage
Differences
This idiom is overwhelmingly British/Irish/Commonwealth. It is very rarely used in American English and would likely be misunderstood or considered odd. The US equivalent might be 'running around like a chicken with its head cut off'.
Connotations
In British English, it carries the same connotations of frantic, ineffectual activity. The mild vulgarity ('arsed') marks it as informal, casual, and often humorous.
Frequency
Relatively common in UK informal speech and writing (e.g., journalism, fiction). Extremely rare to non-existent in standard US usage.
Grammar
How to Use “blue-arsed fly” in a Sentence
[BE/verb of motion] like a blue-arsed flyVocabulary
Collocations
Examples
Examples of “blue-arsed fly” in a Sentence
verb
British English
- He's been blue-arsed-flying around the office all week.
adverb
British English
- He worked blue-arsed-fly to finish the report.
adjective
British English
- She had a proper blue-arsed-fly morning.
Usage
Meaning in Context
Business
"The team has been running around like a blue-arsed fly trying to meet the deadline." (Informal workplace conversation)
Academic
Virtually never used.
Everyday
"I've been like a blue-arsed fly all morning getting the kids ready."
Technical
Not used.
Watch out
Common Mistakes When Using “blue-arsed fly”
- Using it as a standalone noun (e.g., 'He's a real blue-arsed fly.'). It is almost always part of the simile. Using it in formal contexts. Expecting Americans to understand it.
FAQ
Frequently Asked Questions
Almost never. It is a fixed expression used in the simile 'like a blue-arsed fly'. Using it alone sounds very odd and is not standard.
It is mildly vulgar due to 'arsed' (a British informal term for 'backside'). It's fine in casual settings among adults but inappropriate in formal or polite company.
Most Americans would not understand it. It is a distinctively British/Commonwealth idiom. An American might guess the meaning from context but would find the imagery strange.
Not as a formal entomological name. It's a colloquial, humorous name often referring to bluebottle or blow flies, which can have a metallic blue abdomen. The idiom exaggerates this feature for comic effect.
A literal (but colourful) name for a fly, sometimes said to be a bluebottle fly, but often used figuratively.
Blue-arsed fly is usually informal, colloquial, mildly vulgar. in register.
Blue-arsed fly: in British English it is pronounced /ˌbluː ˈɑːst ˌflaɪ/, and in American English it is pronounced /ˌblu ˈɑrst ˌflaɪ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “like a blue-arsed fly”
Learning
Memory Aids
Mnemonic
Imagine a blue-bottomed fly buzzing frantically and pointlessly against a window pane — this captures the essence of chaotic, ineffective activity.
Conceptual Metaphor
HEctic Activity is Chaotic Insect Motion.
Practice
Quiz
In which context would the phrase 'like a blue-arsed fly' be LEAST appropriate?