disorder

disorder — noun

1. a condition where items are not placed neatly where they should be and are inste

1.nounB1
Definition

a condition where items are not placed neatly where they should be and are instead scattered around in a messy, unorganised way.

Example

Caleb’s desk was in complete disorder, with papers and books piled everywhere.

collocation: in complete disorder

The earthquake left the library in disorder, with books spread across the floor.

fixed expression: in a state of disorder

Common collocations
  • in disorder
  • in a state of disorder
  • complete disorder
  • throw into disorder
  • in such disorder
Synonyms
  • mess

    more informal and everyday; 'mess' applies to smaller-scale untidiness while 'disorder' often implies a wider area or more severe lack of order.

  • chaos

    stronger; suggests complete confusion with little hope of quick organisation, whereas 'disorder' can be mild.

  • disarray

    more formal; often describes a situation that was previously organised but has fallen into confusion.

Antonyms
  • order

    the direct opposite state where things are properly arranged in their correct places.

  • neatness

    focuses on tidiness and clean arrangement rather than systematic organisation.

Grammar Patterns

in + disorder

in a state of + disorder

Usage Note

Unlike the everyday word 'mess', 'disorder' suggests a more noticeable or extreme lack of order. The phrase 'in disorder' is a common fixed expression in both formal and neutral English.

Common Mistakes

The room was in disorder with just a few toys on the floor.
The room was a little messy with a few toys on the floor.
'Disorder' is too strong for minor untidiness; use 'mess' or 'untidy' for everyday situations.

2. a medical problem that stops a person’s body or mind from functioning in the usu

2.nounB1
Definition

a medical problem that stops a person’s body or mind from functioning in the usual healthy way, often needing professional care or support.

Example

Dr. Okafor diagnosed the patient with a rare blood disorder that affects the immune system.

medical collocation: diagnosed with + [type] disorder

Jisoo has been receiving treatment for an anxiety disorder since last year.

common compound: anxiety disorder

Common collocations
  • suffer from a disorder
  • diagnosed with a disorder
  • treat a disorder
  • anxiety disorder
  • eating disorder
  • sleep disorder
  • blood disorder
  • mental disorder
  • personality disorder
Synonyms
  • disease

    stronger and more specific; implies a known pathological cause, while 'disorder' can be broader and less defined.

  • condition

    more neutral and broader; applies to any state of health without specifying severity.

  • illness

    less technical; covers any period of being unwell, while 'disorder' is more clinical and specific.

Antonyms
  • health

    the state of normal body and mind function without medical problems.

Grammar Patterns

[adjective] + disorder

diagnosed with + [a] + disorder

suffer from + [a] + disorder

Usage Note

Frequently combined with a preceding adjective that specifies the type (e.g. 'anxiety disorder', 'eating disorder', 'sleep disorder', 'blood disorder'). In medical writing, 'disorder' is often preferred over 'disease' when the cause is not fully understood or when the condition describes a pattern of symptoms rather than a clearly defined pathology.

Common Mistakes

I have a disorder in my stomach.
I have a stomach disorder.
The type of disorder comes as an adjective before the word, not as a phrase after it.

3. a public situation in which crowds of people act angrily or violently, often bec

3.nounB2
Definition

a public situation in which crowds of people act angrily or violently, often because they disagree with a government, a law, or some other authority, causing a disturbance to public peace.

Example

The government declared a state of emergency after days of public disorder in the capital.

collocation: public disorder

Police were called to quell disorder that broke out after the vote results came in.

verb collocation: disorder broke out

Common collocations
  • public disorder
  • civil disorder
  • widespread disorder
  • disorder breaks out
  • lead to disorder
  • cause disorder
  • state of disorder
  • control disorder
Synonyms
  • riots

    stronger; specifically implies violent, destructive crowd behaviour with damage to property.

  • unrest

    broader; can describe simmering tension that has not yet turned openly violent.

  • disturbance

    slightly milder; can apply to smaller-scale incidents of public disruption.

Antonyms
  • order

    the peaceful, lawful state of public life without disruption or violence.

  • peace

    focuses on the absence of violence and conflict in society.

Grammar Patterns

public + disorder

civil + disorder

disorder + break out

Usage Note

Typically uncountable when referring to the general concept of civil unrest ('public disorder', 'civil disorder'). Can be countable when referring to specific incidents ('several disorders were reported during the protest'). In news reporting, 'riots' is stronger and implies more violence, while 'disorder' covers a wider range of disruptive behaviour.

Common Mistakes

The students caused disorder by arguing in class.
The students caused a disruption by arguing in class.
'Disorder' for public unrest implies crowds and potential violence; classroom arguments are better described as 'disruption' or 'commotion'.

disorder — verb

Word family

  • disordered
    adjectiveB2
  • disorderly
    adjectiveB2
  • disorderliness
    nounC1

Synonym discussion

Sense: noun/2

All four words describe states in which the body or mind is not functioning normally, but they differ in precision and clinical use. A 'disease' implies a known pathological cause with distinct symptoms, such as tuberculosis or diabetes. An 'illness' is broader and includes the personal experience of being unwell, regardless of whether a specific cause has been identified. A 'condition' is the most neutral and general term, often used when the problem is ongoing and not necessarily linked to a single cause (e.g. 'a heart condition'). A 'disorder' sits between 'condition' and 'disease' on the clinical spectrum: it describes a pattern of symptoms that disrupts normal function, but the underlying cause may not be fully understood. 'Syndrome' refers to a group of symptoms that occur together, such as irritable bowel syndrome. In practice, a doctor might diagnose a 'sleep disorder' but refer to 'Parkinson's disease'. Choosing among them depends on how much is known about the cause and how formal the context is.

disease ↗condition ↗illness ↗syndrome ↗

Common collocations

Nouns

Adverbs

Phrases

  • in a state of disorder
  • suffer from a disorder
  • throw into disorder
  • lead to disorder

Prepositions

Etymology

LatinOld FrenchEnglish

The word 'disorder' entered English around the late 14th century, borrowed from the Old French word 'desordre', which meant 'lack of order' or 'confusion'. This French word was built from the prefix 'des-' (meaning 'away from' or 'not') attached to 'ordre' ('order'), which itself came from the Latin 'ordo' meaning 'a row, rank, or arrangement'. The medical sense—referring to a condition of the body or mind that prevents normal functioning—developed in English in the 17th century as doctors began using the word to describe a 'disturbance' of the body's natural healthy order. Today the word carries both its original concrete meaning (physical mess) and its later abstract medical meaning.