expound

Imagine your little sister asks, "Why is the sky blue?" A simple "because it is" won't cut it. You'd need to explain the science of light scattering and the atmosphere clearly and in detail. That is what expound means: to set out an idea carefully and fully. It often suggests a thoughtful or formal explanation, like a professor speaking about a complex theory or a politician explaining a policy. You would not usually use it for small everyday things, but you might say an expert expounded on a new archaeological discovery.

To expound means to explain something in great detail, often with the intention of clarifying or making it fully understandable. It's more than just stating facts; it involves developing a subject by adding information, examples, and reasoning. Think of it as unfolding an idea like opening a map—revealing all its layers and intricacies.

The word comes from the Latin exponere, meaning "to set forth" or "to put out," suggesting a systematic and thorough presentation of information. Historically, expounding was often associated with religious sermons or legal arguments where clarity and precision were crucial for interpreting complex texts.

Today, you might hear someone say a scholar "expounded on the history of jazz," meaning they gave a detailed and insightful explanation of its origins and evolution. A lawyer might "expound on" the details of a contract, or a writer might expound on their views in an essay.

It's important to note that expounding often implies authority or expertise: the speaker is sharing knowledge they know well. While you can explain something simply, to expound suggests a fuller and more informed treatment of the subject. It's not just about telling; it's about making the idea clearer.