磨り減る・すり減る・擦り減る・摩り減る|すりへるsuriheru[3]nakadaka (mid-high)

Which spelling to use
磨り減る磨り減る(すりへる) is the most common and most standard mixed kanji-kana spelling. It is a reliable choice in written Japanese.
すり減るすり減る(すりへる) is the second most common mixed kanji-kana spelling and the recommended form for beginners; use it as your default in writing.
擦り減る擦り減る(すりへる) is a less common mixed kanji-kana variant. You may encounter it in written Japanese, but beginners should generally choose すり減る(すりへる) instead.
摩り減る摩り減る(すりへる) is rarely used, despite being a mixed kanji-kana spelling. You may encounter it occasionally, but it is not the form beginners should choose.
Definitions
  1. godan verb, intransitive verbto be worn down; to wear away; to wear out
    この素材そざいは決けっしてすり減へったりしない。↗
    This material never wears out.
  2. godan verb, intransitive verbto dwindle; to be reduced
Conjugation
Dictionary form磨り減る(すりへる)
Polite (masu)磨り減ります(すりへります)
Negative (nai)磨り減らない(すりへらない)
polite (masen)磨り減りません(すりへりません)
classical zu / nu磨り減らず・磨り減らぬ(すりへらず・すりへらぬ)
Past (ta)磨り減った(すりへった)
polite (mashita)磨り減りました(すりへりました)
Past negative (nakatta)磨り減らなかった(すりへらなかった)
polite (masen deshita)磨り減りませんでした(すりへりませんでした)
Te form磨り減って(すりへって)
Potential磨り減れる(すりへれる)
Passive磨り減られる(すりへられる)
Causative磨り減らせる(すりへらせる)
Causative passive磨り減らせられる・磨り減らされる(すりへらせられる・すりへらされる)
Conditional (ba)磨り減れば(すりへれば)
tara磨り減ったら(すりへったら)
Volitional磨り減ろう(すりへろう)
polite (mashou)磨り減りましょう(すりへりましょう)
Imperative磨り減れ(すりへれ)

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

Transitive / intransitive pair
intransitive磨り減るすりへる⇄transitive磨り減らすすりへらす
靴底くつぞこが磨り減すりへる
磨り減る describes the sole wearing down as a natural process, while すり減らす focuses on the action or agent that causes the wear.

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

Japanese definitions
  1. 摩擦まさつなどで小ちいさくなる。
  2. 過度かどの使用しようなどで弱よわる。衰弱すいじゃくする。
Kanji in this word
See also

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