The Independent lists The 58 most commonly misused words and phrases "Whether you're trying to sound sophisticated or simply repeating what you've heard, word fails are all too common and can make smart people sound dumb. In his latest book, 'The Sense of Style,' Harvard cognitive scientist and linguist Steven Pinker explores the most common words and phrases that people stumble over."
I knew most (including "irregardless") but learned a few. I have misused "hone" and "disinterested" and learned about "enormity". A few I never use so I'm not sure how "commonly misused" they are.