腐乱・腐爛|ふらんfuran[0]heiban (flat)

Common
Which spelling to use
腐乱腐乱 is the more common written form of this entry. Beginners may encounter it when reading, but should use the recommended form below when writing.
腐爛腐爛 is less common than 腐乱, but it is the form beginners should use by default when writing this word.
Definitions
  1. noun, suru verb, intransitive verbdecomposition; ulceration
Conjugation
Dictionary form腐乱する(ふらんする)
Polite (masu)腐乱します(ふらんします)
Negative (nai)腐乱しない(ふらんしない)
polite (masen)腐乱しません(ふらんしません)
classical zu / nu腐乱せず・腐乱せぬ(ふらんせず・ふらんせぬ)
Past (ta)腐乱した(ふらんした)
polite (mashita)腐乱しました(ふらんしました)
Past negative (nakatta)腐乱しなかった(ふらんしなかった)
polite (masen deshita)腐乱しませんでした(ふらんしませんでした)
Te form腐乱して(ふらんして)
Potential腐乱できる(ふらんできる)
Passive腐乱される(ふらんされる)
Causative腐乱させる(ふらんさせる)
Causative passive腐乱させられる(ふらんさせられる)
Conditional (ba)腐乱すれば(ふらんすれば)
tara腐乱したら(ふらんしたら)
Volitional腐乱しよう(ふらんしよう)
polite (mashou)腐乱しましょう(ふらんしましょう)
Imperative腐乱しろ(ふらんしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym腐敗ふはいNeutralRotting or spoiling, and figuratively political corruption; broader than 「腐乱」, which is confined to festering decay.
  • Synonym腐りくさりNeutralThe state of rotting or decay; not very common. 「腐乱」 leans written and mostly describes corpses and the like festering.
  • Related腐食ふしょくNeutralMetal rusting or wood rotting; stresses being eaten away. Unlike 「腐乱」, it is not used for corpses festering.
  • Related腐朽ふきゅうWrittenWritten/formal prose for wood or metal decaying with age; not used for corpses.
  • Related腐れくされCasualColloquial. Food or things going bad; also a prefix for worthless, contemptible things, as in 「腐れ外道」. 「腐乱」 means rotting and festering.
  • Antonym新鮮しんせんNeutralFresh food or fish just caught; the opposite of the rotting and festering that 「腐乱」 describes.

Use 「腐乱」 for rotting and festering, chiefly of corpses, as in 「腐乱死体」. For food spoiling say 「腐る」 or 「腐敗」; for metal rusting or wood decaying use 「腐食」; 「腐朽」 is a formal word for aged decay.

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

Japanese definitions
  1. 腐くさってただれること。
Kanji in this word
English equivalents

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