無くてはならない

なくてはならないnakutehanaranai

expression · i-adjective

  1. cannot do without something
  2. indispensable
  3. absolutely necessary
  4. have to do

Kanji in this word

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences