「[況]{いわん}や」 and 「[況]{ま}して」 usages I just learned about and , I tried to search for some detailed grammar point but nothing... Are they the same? I saw both mean "not to mention..." but they seem different from the way I saw them used. Can they be used in everyday life? > : I will not be defeated... certainly not by you! Is it correct if I say that? If yes what does it change to add a to ? > : The economy of Japan is in a bad shape... Not to mention the current politic issues. Is this one correct? Thanks!

is archaic and is rarely used in the everyday language. However, or is still used. Examples would be:

>
>

They both have the same meaning, but gives a bit more emphasis and is also a bit more archaic.

To your examples: `` does sound ungrammatical, you'd have to say something like ``.

Same for ``. You'd have to change it to e.g.:``