Personally, I'd call a win with 11 against 12 blunders not very clean.
what do people mean when they call a win "clean"?
While it can vary from person to person in general they are talking about a "clean win" when a player didnt fall for a simple tactical threat to win the game. It can also refer to using good endgame technique to convert a small advantage to a win.

Clear and logically applied technique. Players such as Capablanca and Kramnik tend to pull off clean wins, as opposed to Tal and sometimes Kasparov who pulled their wins off with complications.

A clean win IMO is a game where the loser never had any winning chances or the final position is hopeless for the losing side.

It means there is none of the foul language, dirty tricks, pornography, drinking or gambling that sully the typical chess game.

It means it's not infested with rodents.
hey!
Rabbits haven't been classified as rodents since 1912 when they were moved to the order Lagomorpha, which includes pikas. Nice try though! You almost got away with it!

I knew rabbits aren't rodents. I just didn't know what order they were actually in.
Rabbits are the first think you want to order. Takes some time to cook them properly.

I knew rabbits aren't rodents. I just didn't know what order they were actually in.
Rabbits are the first think you want to order. Takes some time to cook them properly.
lot more than food needs cooking here ... ;-)
It's a hazard of teaching Thai students. They make this mistake so often, it is easy to miss when reading. And, as you can see, it becomes a norm for the poor teacher who is exposed to it.

I didn't notice it. I read it as "the first thought".
Well, in any case. I think we can all agree; rabbits taste good.

Once my brother-in-law ran over a rabbit accidentally in Galicia. It was ready to cooking ten minutes after arriving home. Highlanders...
For example: "Very good, such a clean win"
I don't know, a victory is a victory, as long as you don't cheat what make it more or less "clean"