Writing & Editing 10 terms with confusing plural forms Have you ever called a group of octopuses ‘octopi’? If so, this article is for you. By Kristin Long@KristinMLongJan. 23, 2017 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.