I can hardly move for ref works, Mysha. So I reach out & pick up the nearest, which happens to be Chambers; & find:

"any member of a class of stringed instruments, tuned in fourths and thirds, forerunners of the violin class..."

Note that 'ANY', ~~ the 'de gamba' is then joined by the 'de braccio'; the 'd'amore'; the 'de spalla'; the 'de-gamboys'; ~~ all *viols* ~~

~~ so what do you call anyone who plays any, or all, or just one, of those, eh?

I am not interested in your multi-linguicity, thank you, Mr Better-Informed-And-Far-More-Gifted--Than-The-Rest-Of-Us. Just answer the question as it concerns the English word "viol", in any or all of its variants, please.

... and I should recommend giving up being a Smartarse: it ill becomes you.

And I hope it keeps fine for you too...

~M~