impairment

impairment — noun

1. the process of making something weaker, less effective, or less valuable, or the

1.nounB2
Definition

the process of making something weaker, less effective, or less valuable, or the state of being in a weakened condition

Example

After the flood, Tunde inspected the warehouse and documented the impairment of its concrete supports.

impairment of [physical object] assessed after damage

Élise noticed a gradual impairment of her violin's sound as the glue joints aged.

collocation: gradual impairment

Common collocations
  • asset impairment
  • impairment of quality
  • gradual impairment
  • serious impairment
  • cause impairment
  • suffer impairment
Synonyms
  • damage

    stronger and more general; implies harm that can be seen or measured; 'impairment' suggests partial loss of function rather than destruction

  • deterioration

    focuses on a gradual worsening over time; 'impairment' may also be sudden

  • weakening

    more transparent and everyday; 'impairment' is more formal

Antonyms
  • improvement

    opposite direction of change — getting better rather than worse

  • strengthening

    making something stronger rather than weaker

Grammar Patterns

impairment + of + noun phrase

cause/lead to + impairment

assess/identify/report + impairment

Usage Note

Common in formal, financial, and legal writing. The uncountable form is typical when describing a general process of weakening; the countable form is used for a specific instance or type of weakening.

Common Mistakes

The storm caused impairment to the roof.
The storm caused impairment of the roof's structure.
The preferred preposition after 'impairment' in the sense of damage is 'of', not 'to'.
Drinking too much soda can impairment your teeth.
Drinking too much soda can cause impairment of your tooth enamel.
'Impairment' is a noun, not a verb. The verb form is 'impair'.

2. a condition in which a part of the body, an organ, or a person's mental ability

2.nounC1
Definition

a condition in which a part of the body, an organ, or a person's mental ability works less well than it should, either temporarily or permanently, often because of injury, illness, or age

Example

The doctor said the hearing impairment in Ayesha's left ear was caused by the explosion.

medical context: hearing impairment + cause

Hamza was born with a visual impairment that makes it hard to read street signs.

collocation: born with + visual impairment

Common collocations
  • hearing impairment
  • visual impairment
  • speech impairment
  • cognitive impairment
  • memory impairment
  • physical impairment
  • suffer from an impairment
Synonyms
  • disability

    broader term covering functional limitations in daily life; 'impairment' is the underlying physical/mental condition

  • disorder

    often used for medical conditions affecting specific systems; 'impairment' focuses on the loss of function rather than the condition itself

  • loss

    stronger and more final (e.g. hearing loss vs hearing impairment); 'impairment' implies partial rather than total loss

Antonyms
  • normal function

    the expected or healthy level of operation of a body part or organ

Grammar Patterns

[type] + impairment — e.g. hearing impairment, visual impairment

impairment + in + body part / organ

suffer from / experience + impairment

Usage Note

Medical or clinical term preferred over 'damage' or 'injury' when describing reduced function. The specific type is almost always specified (hearing, visual, cognitive, speech, memory, etc.). This sense is also used in disability law and social services.

Common Mistakes

She has an impairment leg.
She has a leg impairment.
The adjective form ('impaired') or a noun modifier before 'impairment' is needed: 'leg impairment' or 'impaired leg', not 'impairment leg'.

❌ 'Impairment' and 'disability' mean the same thing.' — In medical and legal contexts, 'impairment' refers specifically to a problem with body function or structure, while 'disability' is a broader term that includes the social and practical limitations that result from an impairment.

Word family

  • impair
    verbB2
  • impaired
    adjectiveB2
  • unimpaired
    adjectiveC1

Synonym discussion

Sense: noun/1

All four words describe a negative change, but they differ in scope and intensity. 'Damage' is the most general and widely used — it can refer to physical harm ('storm damage') or abstract harm ('damage to one's reputation'), and it is stronger than 'impairment', suggesting visible or measurable harm. 'Deterioration' emphasises a gradual, often continuous worsening over time ('deterioration of road conditions') and is more clinical in tone. 'Weakening' is the most everyday synonym, transparent in meaning, and typically used for reduction in strength or power ('weakening of the economy'). 'Loss' implies that something is gone entirely rather than just reduced, making it the strongest of the four. For example: 'The roof suffered damage in the storm' (broken), 'a gradual deterioration of the paintwork' (slow worsening), 'a weakening of the muscles' (loss of strength), and 'hearing loss' (total absence) — whereas 'impairment' sits between 'weakening' and 'loss', suggesting partial but meaningful reduction in function.

damage ↗deterioration ↗weakeningloss ↗

Common collocations

Nouns

Adverbs

Phrases

  • suffer from impairment
  • lead to impairment
  • result in impairment
  • cause impairment
  • assess impairment

Prepositions

Etymology

LatinOld FrenchEnglish

The noun 'impairment' comes from the verb 'impair', which entered English in the 1300s from Old French 'empairer', meaning 'to make worse'. The French word was formed from the prefix 'em-' (causing a state) and 'peior' — from Latin 'peior' meaning 'worse'. So the core idea has always been 'making worse' rather than 'breaking completely'. The noun form has been used in English since the 1500s and gradually developed its specialised medical meaning in the 19th and 20th centuries.