lability
C2 (Very low frequency, specialised term)Technical, Academic, Clinical, Formal
Definition
Meaning
The quality or state of being easily changed, altered, or unstable, especially in mood, emotion, or chemical state.
Susceptibility to change or alteration, particularly referring to emotional instability, variability in mental state, or, in chemistry/physics, the ease with which a substance or system undergoes a change of state.
Linguistics
Semantic Notes
Most commonly used in psychology/psychiatry (affective lability), chemistry, and physics. Implies a lack of stability that can be inherent or a characteristic response to stimuli.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning. Slightly higher frequency in American clinical/psychiatric literature.
Connotations
Neutral to negative connotation, implying a lack of control or predictability.
Frequency
Very low frequency in both varieties; primarily a technical term.
Vocabulary
Collocations
Grammar
Valency Patterns
[the] lability of [noun (e.g., emotion, compound)]demonstrate/show labilitycharacterised by labilityVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “(None - too technical for idiomatic use)”
Usage
Context Usage
Business
Rare. Might be used metaphorically: 'The lability of consumer sentiment makes forecasting difficult.'
Academic
Common in psychology, psychiatry, chemistry: 'The study examined the thermal lability of the protein complex.'
Everyday
Extremely rare. Would likely be paraphrased: 'mood swings' or 'unstable'.
Technical
Primary domain. Specific meanings in chemistry (tendency to undergo change) and clinical psychology (rapid, exaggerated mood shifts).
Examples
By Part of Speech
verb
British English
- The compound labilises under UV light.
- (Note: 'labilise' is rare, technical)
American English
- The treatment can labilize the patient's emotional state. (Rare, technical)
adverb
British English
- (Extremely rare, not standard usage)
American English
- (Extremely rare, not standard usage)
adjective
British English
- The patient exhibited labile hypertension, with readings varying wildly.
- Thermally labile materials require cold storage.
American English
- Her labile affect was a key symptom noted in the evaluation.
- The compound is highly labile in acidic conditions.
Examples
By CEFR Level
- (Not applicable for this level)
- (Not typical for this level. Paraphrase: Her mood changes very quickly.)
- The chemical's lability means it must be kept in a dark, cool bottle.
- Doctors noted the emotional lability following the brain injury.
- Affective lability is a core diagnostic criterion for certain personality disorders.
- The research focused on the catalytic lability of the transition metal complex.
Learning
Memory Aids
Mnemonic
Think of 'LIABILITY' - something that's a liability can be unstable or unpredictable. 'Lability' is the state of being liable to change.
Conceptual Metaphor
EMOTION/STATE IS A FLUID SUBSTANCE (prone to spilling/evaporating/changing form easily).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid confusion with 'лабильность', which is a direct cognate and correct but is a high-register, technical term in Russian as well. Do not confuse with more common words for 'instability' like 'нестабильность' or 'изменчивость' without considering the technical nuance.
Common Mistakes
- Confusing 'lability' with 'liability' (legal/financial responsibility).
- Using it in everyday contexts where 'instability' or 'mood swings' would be clearer.
- Incorrect pluralisation (*labilities) - typically uncountable.
Practice
Quiz
In which field is the term 'lability' LEAST likely to be used?
FAQ
Frequently Asked Questions
'Lability' is a more specific, often technical term implying ease or readiness to change, frequently applied to emotions or chemical states. 'Instability' is broader and more general, applicable to physical structures, governments, economies, etc.
Rarely. It is almost always neutral or negative, suggesting a lack of steadiness or control. In some creative or adaptive contexts, 'flexibility' or 'adaptability' would be the positive counterparts.
No. It is a low-frequency, specialised term primarily confined to academic, clinical, and scientific writing.
'Emotional lability' in clinical/psychological contexts and 'thermal lability' or 'chemical lability' in scientific contexts.