to not yield an inch

I do not agree with you.

I'm not sure.

It is not far.

not to be much to write home about

Do not be so coy!

To be, or not to be: that is the question.

He’s not one to keep his opinions to himself

Not till then did it occur to me.

I do not get on with him/her.

It’s not much use

He is not exactly my friend.

It's not serious.

not a glimmer of interest

to not give a damn

I'm not going to drink the coffee.

It is not our custom to ...

I’m not in the mood to laugh / for laughing

It’s not my responsibility to do that

I'm not young any more.

not to take long over the introductions

Not that as well!

not to write something without intending to publish it

not a quarter as good

I do not object