to be [not] worth the admission money

not to be detrimental to something

to not be in the mood

not to damage something

Not half bad

He is not in his right senses.

not to be prejudicial to something

to not be in the mood for jokes

It’s not over till it’s over

to not be in the right frame of mind to do something

not a nice way

not to be able to get going in the morning

to not be in the same league as someone

It’s not as simple as that!

I’m not made of money

I do not quite see my way as yet.

to not be much good

to be not the brightest button that ever shone

I do not wish either.

It’s not exactly brilliant

to not be on speaking terms with someone

to be not the sharpest tool in the box/shed

not to be entirely wrong there

not even a suggestion of fatigue

I’m not as green as I look