Definition of 無くてはいけない (なくてはいけない)
な
無くてはいけない
なくてはいけない
nakutehaikenai
Common word
expression
1.
cannot do without something, indispensable, absolutely necessary(usually kana)
2.
have to do(usually kana)(after negative base of verb)
Related Kanji
無 | nothingness, none, ain't, nothing, nil, not |