several; numerous; much; many; a lot; a large/great number of ...
I have been there several times.
They differ in several particulars
There wasn't much harm done
To talk/eat/drink a lot
He has money coming out of his ears
There is abundant evidence that ...
profusely; abundantly
To bleed/perspire profusely
poly-; multi-
Multivitamin: Containing many vitamins
Multiuser system