Smaller-sized copy, or lines of text that appear around or below user interface elements, like buttons, labels, search boxes, or email address form fields.

The text often guides or communicates instruction or reassurance to users.

Here is a real-life example of microcopy used in a search box:

Here is a real-life example of microcopy used to clarify an form field:

When tested and optimized, microcopy can help to improve the user experience by providing clarity, reducing confusion and frustration, or through enhancing the usability of a product.