Origin

This character combines the speech radical 言 on the left, which shows this is about words or communication, with the component 丁 on the right that serves as a sound hint for how to pronounce it. The idea of "revising" or "correcting" comes from the sense of adjusting or straightening words and speech — when you correct something, you're making it straight or proper, just as 丁 suggests a fixed, ordered form. Together, the character developed to mean correcting or deciding through language.