I 'disapproved of' [=I disagreed with] their decision, but I said nothing against it.
The word “ain't” is 'disapproved' [='criticized'] by most teachers.
Some people may 'disapprove of' the government's actions.
(..) She's in Moscow to have the baby. Kitty! Tell her how pleased I am. Perhaps I'll wait a year or two. Love. Yes, love. Don't you disapprove of me for what I've done? No. I wish I'd done the same. But no one asked me. Well, I wouldn't have been brave enough. Stiva, you know, (..)2012 Anna Karenina