慣らす・馴らす|ならすnarasu[2]nakadaka (mid-high)

JLPT N1approx.Common
Which spelling to use
慣らす慣らす is the more common written form and the recommended default for beginners when writing this word.
馴らす馴らす is a less common written variant of 慣らす; beginners should generally choose 慣らす instead.
Definitions
  1. godan verb, transitive verbto accustom; to train (e.g. one's ear)esp. 慣らす
  2. godan verb, transitive verbto tame; to domesticate; to train (an animal)esp. 馴らす
    このライオンはよく飼い馴かいならされている。↗
    This lion is very tame.
    彼かれはピューマを慣ならすのに大おおいに骨ほねを折おった。↗
    He took great pains in taming a puma.
Conjugation
Dictionary form慣らす(ならす)
Polite (masu)慣らします(ならします)
Negative (nai)慣らさない(ならさない)
polite (masen)慣らしません(ならしません)
classical zu / nu慣らさず・慣らさぬ(ならさず・ならさぬ)
Past (ta)慣らした(ならした)
polite (mashita)慣らしました(ならしました)
Past negative (nakatta)慣らさなかった(ならさなかった)
polite (masen deshita)慣らしませんでした(ならしませんでした)
Te form慣らして(ならして)
Potential慣らせる(ならせる)
Passive慣らされる(ならされる)
Causative慣らさせる(ならさせる)
Causative passive慣らさせられる(ならさせられる)
Conditional (ba)慣らせば(ならせば)
tara慣らしたら(ならしたら)
Volitional慣らそう(ならそう)
polite (mashou)慣らしましょう(ならしましょう)
Imperative慣らせ(ならせ)

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

Transitive / intransitive pair
transitive慣らすならす⇄intransitive慣れるなれる
耳みみを慣ならす
慣れる describes a person or thing naturally becoming accustomed to something (~に), while 慣らす means to deliberately accustom someone or something (~を) to a condition.

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

Japanese definitions
  1. 順応じゅんのうさせる。慣なれさせる。
  2. 飼い慣かいならす。手懐てなずける。
Kanji in this word
English equivalents

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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