> > -bus is the plural ablative form, yes. But I'm talking about the root. Look it up in your vocab if you don't believe me. Plus, pluris, etc is a comparitive form, usually meaning more. It's not the ending in this case that makes it comparitive, it's simply an irregular comparitive word by itself.
> >
> > Mark"Latinus est meliorem linguam quam aliquis linguas! Aut non."
>
> She just asked where you got your information, she wasn't doubting you! And now I'm curious, too. Was this in a class, perhaps? Out of a book? Please tell us! I'm dying to know!
>
> Ti'ok, I'm not dying, just curious'cia

I think this link explains it fairly clearly.