expression, adjective

  1. indispensable, vital, fundamental, imperative, crucial, critical.

Variations

Pronunciation Kanji Kana Is Common
 
 
 
 
欠かせない かかせない

Contained Kanji Breakdown

lack, gap, fail
ケツ か.ける ケン (4th, N3)
knife, wrapping enclosure(勹) variant
person
ひと ニン ジン (1st, N5)