なくちゃいけない

expression

cannot do without; indispensable; absolutely necessary

Used when something is essential and cannot be omitted. Often follows a noun marked with が or は.

See also: 無くてはいけない (なくてはいけない)

• この仕し事ごとには経けい験けんが無なくちゃいけない。

  Experience is indispensable for this job.

• 健けん康こうは無なくちゃいけないものだ。

  Health is something you cannot do without.

expression

have to do; must do

Attaches to the negative stem of a verb (ない-form minus ない) to express obligation. Colloquial contraction of なくてはいけない.

See also: 無くてはいけない (なくてはいけない)

• もう行いかなくちゃいけない。

  I have to go now.

• 宿しゅく題だいをやらなくちゃいけない。

  I must do my homework.