mule
B1neutral, can be technical in specific contexts (e.g., textile machinery, smuggling).
Definition
Meaning
The sterile hybrid offspring of a male donkey and a female horse, known for its strength and endurance.
A person who is used to carry illegal items (especially drugs) across borders; a machine for spinning cotton; a slipper or shoe with no back; a stubborn or obstinate person.
Linguistics
Semantic Notes
The term spans literal animal reference, technical machinery, footwear, and highly specific figurative/criminal slang, making context critical for interpretation.
Dialectal Variation
British vs American Usage
Differences
In footwear, 'mule' is the standard term in both varieties. The machinery sense is dated but equally understood. The 'drug courier' sense is common in international law enforcement/journalism in both.
Connotations
In both, the animal connotes stubbornness and hybridity. The 'drug mule' connotation is strongly negative and criminal.
Frequency
The animal sense is moderately common. The 'drug mule' sense is frequent in news media. Other senses are lower frequency.
Vocabulary
Collocations
Grammar
Valency Patterns
[be] + as stubborn as a NP (mule)NP (authorities) + caught/arrested + a muleNP (he) + is + a mule + for + NP (work)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “as stubborn as a mule”
Usage
Context Usage
Business
Rare, except historically in textiles ('spinning mule').
Academic
Used in biology (hybrid sterility), criminology (drug trafficking), and history of technology.
Everyday
Most common for describing a stubborn person or the animal.
Technical
Precise zoological term; dated term for a spinning machine.
Examples
By Part of Speech
verb
British English
- (Rare/archaic) Not commonly used as a verb in modern UK English.
American English
- (Slang, rare) He was muling contraband across the desert.
adverb
British English
- (No standard adverbial form.)
American English
- (No standard adverbial form.)
adjective
British English
- He has a mule-like stubbornness.
American English
- They relied on mule deer for sustenance.
Examples
By CEFR Level
- The farmer used a mule to carry the heavy bags.
- My grandad is as stubborn as a mule!
- She bought a comfortable pair of mules for the summer.
- The ancient trade route was travelled by mule trains.
- The spinning mule was a key invention of the Industrial Revolution.
- The cartel used vulnerable people as drug mules.
- The genetic incompatibility renders the mule sterile, a classic example of hybrid breakdown.
- Prosecutors built their case on the testimony of a captured mule who turned informant.
Learning
Memory Aids
Mnemonic
Imagine a MULE is a MULEt (a mix) of a horse and a donkey, and it MULEs (mules) heavy packs.
Conceptual Metaphor
STUBBORNNESS IS BEING A MULE; A TOOL/PASSIVE CARRIER IS A MULE.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid confusing with 'мул' (the animal is correct) and 'мюль' (a shoe type). The 'drug mule' sense does not have a direct one-word equivalent; 'курьер' or 'перевозчик' are descriptive translations.
- The adjective 'mulish' (упрямый) exists but is less common than 'stubborn as a mule'.
Common Mistakes
- Using 'mule' to mean a young donkey (it's a specific hybrid).
- Pronouncing it as /mu:l/ instead of /mjuːl/.
- Using 'drug mule' in overly informal contexts where 'courier' or 'smuggler' is more appropriate.
Practice
Quiz
In a criminology report, the term 'mule' most likely refers to:
FAQ
Frequently Asked Questions
No. A donkey is a distinct species. A mule is the sterile hybrid offspring of a male donkey and a female horse.
Rarely. Its positive connotations are limited to historical admiration for its strength and endurance as a pack animal. Figurative uses (stubborn, drug courier) are negative.
By analogy with the pack-carrying animal, implying the person is used as a beast of burden to transport contraband, often unknowingly or under coercion.
It's recognised but less common than the simile 'as stubborn as a mule'. It's a descriptive adjective meaning obstinate.