lethargy
C1Formal / Neutral
Definition
Meaning
A state of tiredness, drowsiness, and lack of energy or enthusiasm, often involving mental and physical inactivity.
A pathological state of apathy or torpor, which can be a symptom of medical or psychological conditions. Can also refer to a general lack of interest, activity, or progress in a system or organisation.
Linguistics
Semantic Notes
While often interchangeable with 'fatigue' or 'tiredness', 'lethargy' implies a deeper, more pervasive state of sluggishness and disinclination to act, bordering on torpor. It is less about the simple need for sleep and more about a profound lack of drive.
Dialectal Variation
British vs American Usage
Differences
Usage is virtually identical in meaning and frequency. The primary difference lies in the preferred pronunciation of the final syllable.
Connotations
None significant.
Frequency
Similar frequency in both varieties. Slightly more common in written and formal contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
[Verb] + lethargy (e.g., experience, feel, cause)Lethargy + [Verb] (e.g., set in, descended, overcame)[Adjective] + lethargy (e.g., deep, strange, post-viral)Lethargy + [Preposition] (e.g., lethargy in the markets, lethargy after the meal)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “A blanket of lethargy descended on the office after the announcement.”
Usage
Context Usage
Business
Refers to a lack of activity or growth in markets, sales, or economic performance (e.g., 'The report highlighted the lethargy in the housing market').
Academic
Used in psychology, medicine, and literary analysis to describe a pathological state or a character's psychological condition.
Everyday
Describes a strong feeling of being very tired and lacking motivation, often after illness, a large meal, or during hot weather.
Technical
A clinical term in medicine for an abnormal state of drowsiness or lack of energy, a symptom of many conditions (e.g., anaemia, hypothyroidism, depression).
Examples
By Part of Speech
verb
British English
- The hot weather seemed to lethargise the entire crowd at the cricket match.
American English
- The bureaucratic process can lethargize even the most energetic reformers.
adverb
British English
- He moved lethargically towards the kettle.
American English
- She waved her hand lethargically, barely mustering a greeting.
adjective
British English
- He gave a lethargic shrug when asked about the weekend's plans.
American English
- The stock market remained lethargic throughout the trading session.
Examples
By CEFR Level
- I often feel lethargy after a big lunch.
- The heat causes a lot of lethargy in the summer.
- A strange lethargy overcame her in the weeks following the flu.
- The government has been criticised for its lethargy in dealing with the crisis.
- The patient presented with symptoms of profound lethargy and cognitive slowing.
- Analysts attributed the market's lethargy to political uncertainty and weak consumer confidence.
Learning
Memory Aids
Mnemonic
Imagine a **lethargic** lizard lying on a **leth**-arg (let's argue) rock, too tired and slow to even argue about anything.
Conceptual Metaphor
LETHARGY IS A HEAVY WEIGHT / BLANKET (e.g., 'weighed down by lethargy', 'a blanket of lethargy'). LETHARGY IS SLOW MOVEMENT (e.g., 'economic lethargy').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'летаргия' (letargiya), which in Russian is a much rarer, more specific medical term akin to a stupor or pathological sleep. The English 'lethargy' is far more common and general.
Common Mistakes
- Mispronouncing the 'th' as /t/ or /d/. Incorrectly using it as a countable noun (e.g., 'I have a lethargy' – should be 'I have lethargy' or 'a feeling of lethargy').
Practice
Quiz
In which context is 'lethargy' LEAST appropriate?
FAQ
Frequently Asked Questions
Not exactly. While tiredness is a common feeling, lethargy is a more intense and pervasive state of sluggishness, lack of energy, and disinterest in activity. It's often used for a state that is abnormal or symptomatic.
No, it is almost exclusively negative, describing an undesirable state of low energy and inactivity.
Lethargy primarily describes a physical and mental state of low energy and sluggishness. Apathy describes a lack of interest, enthusiasm, or concern. They often occur together, but one can be apathetic without feeling physically lethargic.
It is neutral to formal. It is perfectly acceptable in everyday speech (e.g., 'I've got this weird lethargy today'), but it is also common in medical, business, and academic writing.
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