Not very

There are levels of fatigue or tiredness.
“Are you tired?” can be answered with “Yes”, “No”, or with a modified level “No, not particularly” or “Not really” or “Not very” or “Not a bit.”

For example:

T: Are you tired?

W: No, not very ./ Not really. The 'no' here is not very natural. I'd delete it.

Can 'not really' sometimes mean 'not very'? Can I use 'not really' instead of 'No, not very' here? Yes and yes.

Hi wilpeter and Clive,

Does 'not particularly' mean 'not very'?
What's the subtle difference between 'not particularly', 'not very' and 'not really' here?

Thanks a lot.

What's the subtle difference between 'not particularly', 'not very' and 'not really' here?

No subtle difference is usually intended when these casual expressions are used.

Clive

I agree, there isn’t any difference nor any measurement that one can apply to being tired. You can come home tired from work, then someone invites you to go out bowling and you suddenly don’t feel tired. Sometimes I can’t find anything to watch on TV and I think I must be tired; then I chance on this forum, and I’m not tired again.

Hi, Clive and wilpeter,

Thank you both for your kind replies.
Can I use 'not really' to mean 'not very much'?
For example:
T: Do you like the TV show very much?
W: No, I don't it very much./ Not really.

Thanks a lot.

Can I use 'not really' to mean 'not very much'? Yes