蝕む・虫食む|むしばむmushibamu[3]nakadaka (mid-high)

Common
Which spelling to use
蝕む蝕む is the most common and standard written form; it is the usual choice for writing this word.
虫食むYou will seldom see 虫食む in writing; it is a less common variant of 蝕む, not the form beginners should normally choose.
Definitions
  1. godan verb, transitive verb, intransitive verbto be worm-eaten; to be eaten by worms
  2. godan verb, transitive verb, intransitive verbto affect adversely; to spoil; to ruin; to undermine; to gnaw at (one's heart, body, etc.); to eat into; to destroy
    彼かれの名誉めいよは貪欲どんよくによってむしばまれた。↗
    His honor was corroded by greed.
Conjugation
Dictionary form蝕む(むしばむ)
Polite (masu)蝕みます(むしばみます)
Negative (nai)蝕まない(むしばまない)
polite (masen)蝕みません(むしばみません)
classical zu / nu蝕まず・蝕まぬ(むしばまず・むしばまぬ)
Past (ta)蝕んだ(むしばんだ)
polite (mashita)蝕みました(むしばみました)
Past negative (nakatta)蝕まなかった(むしばまなかった)
polite (masen deshita)蝕みませんでした(むしばみませんでした)
Te form蝕んで(むしばんで)
Potential蝕める(むしばめる)
Passive蝕まれる(むしばまれる)
Causative蝕ませる(むしばませる)
Causative passive蝕ませられる・蝕まされる(むしばませられる・むしばまされる)
Conditional (ba)蝕めば(むしばめば)
tara蝕んだら(むしばんだら)
Volitional蝕もう(むしばもう)
polite (mashou)蝕みましょう(むしばみましょう)
Imperative蝕め(むしばめ)

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

Synonyms & antonyms
  • Related冒すおかすWrittenWritten/formal prose. Means to harm or invade, focusing on disease attacking the body or on braving a risk; unlike 「蝕む」, it lacks the sense of gradual erosion.
  • Related障るさわるNeutralNeutral. To be harmful, focusing on hindering the body or one's work, as in 「体に障る」; 「蝕む」 stresses gradual, bit-by-bit erosion.
  • Antonym養うやしなうNeutralNeutral. To raise and support, to nourish and sustain — the opposite of 「蝕む」, which wears things away bit by bit.
  • Antonym築くきずくNeutralNeutral. To build up or establish something bit by bit — the opposite of 「蝕む」, which slowly erodes and destroys.

Use 「蝕む」 for worm-eaten things or the gradual erosion of body, mind, or society, as in 「病に蝕まれる」「心を蝕む」. For disease attacking the body, say 「冒す」; for simply being harmful, 「障る」. 「養う」 and 「築く」 are opposites.

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

Japanese definitions
  1. 虫むしが食くって形かたちを損そこなう。
  2. 体からだ・精神せいしんなどを少すこしずつ侵おかす。
Kanji in this word
English equivalents
See also

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