How to say "disorder" in Japanese

• 混乱こんらんJLPT N3approx.Common
  noun, suru verb, intransitive verbCovers disorder in the sense of confusion or mayhem — a scene, situation, or state of affairs thrown into disarray, often involving people. Use this when 'disorder' means things are in a jumble or commotion rather than a medical condition.
  国会こっかいは混乱こんらんのうちに散会さんかいした。↗

  The Diet broke up in confusion.
• 乱れみだれCommon
  nounUsed for disorder as a disturbance or breakdown of order — unrest or things falling out of their proper arrangement. It suggests something that was ordered has become disordered, rather than outright chaos.
  女性じょせいホルモン分泌ぶんぴつの乱みだれが不妊症ふにんしょうの大おおきな原因げんいんです。↗

  Female hormone imbalance is a major cause of infertility.
• 疾患しっかんCommon
  nounThe medical sense of 'disorder' — a disease, illness, or clinical condition affecting the body or mind. This is the word you want for medical contexts such as eating disorders or sleep disorders.
• 不調ふちょうJLPT N1approx.Common
  no-adjective, na-adjectiveRefers to poor condition or a slump — a person, machine, or negotiation being out of shape or not working well. It suits 'disorder' only loosely; usually the better reading is 'poor condition' rather than disorder itself.
  商売しょうばいは先月せんげつちょっと不調ふちょうだった。↗

  Business was a little slow last month.
• 混沌こんとんCommon
  no-adjectiveCovers disorder as chaos or confusion in an abstract, often sweeping sense — a state of complete disorder where nothing is clearly organized. Stronger and less everyday than 混乱.

Use 疾患 for medical disorders, 混乱 for chaotic disorder among people or things, 混沌 for deeper chaos, 「乱れ」 for disturbed order, and 不調 for things in poor condition.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 混乱こんらんdisorder
• 乱れみだれdisorder
• 疾患しっかんdisease
• 不調ふちょうbad condition
• 混沌こんとんchaos
• 乱雑らんざつdisorder
• 無秩序むちつじょdisorder
• 乱脈らんみゃくdisorder
• 紛糾ふんきゅうcomplication
• 異状いじょうsomething wrong
• 不同ふどうdifference
• 狼藉ろうぜきdisorder
• 紊乱びんらんdisorder
• ディスオーダーdisorder
• 紛乱ふんらんconfusion
• ごちゃまぜjumble
• てんやわんやconfusion
• 障害しょうがいdisorder
• トラブル(medical) condition
• むちゃくちゃdisorder
• 混雑こんざつconfusion
• 取り込みとりこみconfusion
• 大荒れおおあれagitation
• 混濁こんだくdisorder
• 違乱いらんdisorder
• ごたごたconfusion