The opposite of al dente is.....

Boatman

“scotta,” meaning overcooked, limp, mushy. I hava asked every Italian waiter or waitress this question, and no one could provide the answer. Go ahead....Impress your friends LOL.

lowercasebill

i looked this up last night on google and was taken to an italian food forum asking the same question . some gave the answer you suggested and several indicated you should not use this word with your greek friends, apparently it is a "bad" work in greek , who knew?
bill

Morro Bay Rich

I still say RAW qualifies as a valid answer.