ず is the classical version of the negative ending ない. It is often used in writing and in other grammatical structures. For group 1 and 2 verbs we simply replace ない with ず as per the following table:

English Dictionary Negative ず Form
to go かない かず
to swim およ およがない およがず
to go home かえ かえらない かえらず
to say わない わず
to think かんがえる かんがえない かんがえず

For group 3 verbs.

 English Dictionary Negative ず Form
to do する しない せず
to come 来る 来ない 来ず

To create the ないで te form we simply add に.

あまり相手あいて気持きもちを考慮こうりょせずにきびしい言葉ことばけた。
Without much considering the other person’s feelings he hurled some harsh words.
かんがえずに旅行りょこう予約よやくれる。
To book a holiday without hesitation.
予約よやくせずにおみせく。
To go to a restaurant without making a reservation.
You May Also Like

Movement Towards an Action

Movement towards action refers to sentences like the following: I am going to eat. I am coming to…

No Way

We have two ways of forming the expression “there’s no way that…” or “it’s impossible that…”—わけがない and はずがない.…

Dependency

JLPT N3. Used in both conversation and writing depending on the usage. よる is a grammatically versatile verb…

A Comprehensive Guide to the “te” Form

The te form is without doubt one of the most used and important conjugations in Japanese grammar. Unfailingly,…