One obscure Greek word in a cartoon--κον

[Theseus]

I don't understand one small Greek word in this cartoon. It looks like κον. The meaning of the rest is obvious:- . Am I right or is it a more obvious word I'm missing?
Is it perhaps καν with the meaning καθόλου or some such word but I haven't come across it before.

 

[Duke_of_Waltham]

You're right, it's "καν", though I'd put the meaning more as "not even":

"Did you know it takes three sheep to make a woolen jumper?"
"No, I didn't even know they could knit!"

It's used for emphasis in negative sentences.

 

[Theseus]

Thanks, Duke. As I said, I've never come across it before.:)