Comprehensive resource for understanding and mastering English idioms
Perfect for quick learning and surprise insights into the English language.

The idiom "on the case" means to be actively investigating or working on something, usually to solve a problem or find information. It can also refer to someone who is experienced and competent at their job or task.

The idiom "good account of" means to have a detailed explanation or accurate information about something. It can also imply being able to provide an account or report about something, as well as having a thorough understanding of a topic.

The idiom "cut and thrust" refers to a lively, competitive, and sometimes confrontational exchange of ideas or opinions. It can also describe a situation where people are arguing or debating intensely.


Red Letter Day is an idiom that refers to a day of great significance or importance. The term "red letter" historically referred to a bold, colorful ink used for important documents, such as birth certificates and marriage licenses.