Almost like a less offensive Urban Dictionary, IdiomDictionary is for those phrases that everyone seems to understand except you—instead of getting them to explain it, you can look it up in their ...

The cat's out of the bag—idioms can be tricky, even for native English speakers. If you’re going to live in the United States or converse with English speakers, you’ll need to master our most commonly ...

Sure, we all know why “separate the wheat from the chaff” means dividing bad from good, but some of their other finds are fascinating. For example, did you know that examining an animal’s teeth could ...