JMdict: 2098150

無くてはならない 【なくてはならない】

  1. [exp,adj-i] cannot do without something; indispensable; absolutely necessary
  2. [exp,adj-i] have to do
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
無 Nothingness, None, Ain't, Nothing, Nil, Not ム, ブ な.い