Questions & Answers about Lui è ignorante e deve vergognarsi.
How could we make ignorante sound even more insulting using this lesson's suffixes?
You can drop the final -e and add the pejorative suffix -accio, making the word ignorantaccio. This translates roughly to "a big, nasty ignoramus" and strongly emphasizes the negative trait.
Why is the pronoun si attached to the end of vergognarsi?
Because vergognarsi (to be ashamed) is a reflexive verb following the modal verb deve (must). When an infinitive follows a modal verb, you drop the final -e of the infinitive and attach the reflexive pronoun to the end. You could also move it before the conjugated verb, which means exactly the same thing: si deve vergognare.
Is ignorante used exactly like "ignorant" in English?