Strikethrough is a text formatting style that displays a line through the center of a word or phrase. It is often used to indicate that something is no longer relevant, has been removed, or is incorrect. This formatting can be found in various applications, including word processors and online platforms, making it a useful tool for editing and revising content. In digital communication, such as emails or social media posts, strikethrough can add a humorous or sarcastic tone. It allows users to convey changes or corrections without deleting the original text, preserving the context while highlighting modifications.