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disorder

Pronunciation: /dɪsˈɔːdə/

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Definition of disorder

noun

[mass noun]
  • a state of confusion:the world 's currency markets were in disorder
  • the breakdown of peaceful and law-abiding public behaviour:recurrent food crises led to outbreaks of disorder
  • [count noun] Medicine an illness that disrupts normal physical or mental functions:skin disorders [mass noun]:an improved understanding of mental disorder

verb

[with object] (usually as adjective disordered)
  • disrupt the systematic functioning or neat arrangement of:she went to comb her disordered hair his sleep is disordered
  • Medicine disrupt the normal functioning of:a patient who is mentally disordered

Origin:

late 15th century (as a verb): alteration, influenced by order, of earlier disordain, from Old French desordener, ultimately based on Latin ordinare 'ordain'

disorder in other Oxford dictionaries

Definition of disorder in the US English dictionary