First opened Monday, July 9, 2012
乱す
みだす
- middle-high (nakadaka): falls after mora 2
How to read it: a line over a kana means the voice is high there, and ↓ marks where it drops. A kana with no line is low. With no ↓ the pitch stays high to the end and does not drop even on a following particle (が, は).
to throw out of order, to disarrange, to disturb
Midasu is from 乱れる (midareru, “to be confused, to be disordered”).
Taken apart
No breakdown is shown for this word: Wiktionary's text for it doesn't give a split that spells the word and joins to its reading, and any other split would be a guess.
Written with 乱
In a sentence
彼はその知らせに心を乱した。
He was agitated by the news.
父は私の楽観を乱さないことにした。
My father chose not to disturb my optimism.
Sentences are from Tatoeba (CC BY 2.0 FR), picked by fixed rules from a dated export and shown unchanged. Nobody has reviewed them one by one.
What Wiktionary says
Quoted line by line from Wiktionary's Etymology section for this reading, taken from one dated dump so it can't change underneath us. Nothing below is paraphrased.
- “From 乱(みだ)れる (midareru, “to be confused, to be disordered”). Compare みだら (midara, “obscene, indecent”) and 乱(みだ)りに (midari ni, “haphazardly, randomly”).”
Source: Wiktionary: 乱す (dump of 2026-09-02), available under CC BY-SA 4.0. Reading, meaning and part of speech from JMdict, and kanji readings from KANJIDIC2 (EDRDG).
What the labels mean
- 和語 Native Japanese
- Words that were already Japanese before Chinese vocabulary arrived — usually written with kun'yomi and often short.