As I remember from grammar lessons, adjectives are classified into regular and irregular (are totally different in their base form and comparative form, such as bad and worse), and into short (one syllable) and long (two syllables).
My question is if there is an irregular adjective which is also long? For now, I found short irregular adjectives (such as good and bad) only, and I'm not sure if something that I'm looking for, exists at all.
I found some lists of irregular adjectives and they don't have even one long irregular adjective, but I'm not sure if there's no an exception and it is not listed there.