Speak like an insider! Welcome to Snopes-tionary, where we'll define a term or piece of fact-checking lingo that we use on the Snopes team. Have a term you want us to explain? Let us know. Also known ...

If you’ve been in on any online debates, you’ve probably heard of the ad hominem argument, an “argument against the person” in other words, attacks on someone’s character. Here’s one formal definition ...