unzip

You probably know "zip" as what you do when you close a jacket or bag, so "unzip" means opening it again. It is used for things with a zipper, like a coat, backpack, or pouch. In the digital world, "unzip" also means opening a compressed file or folder so you can use what is inside. In both cases, the idea is simple: something closed or packed is opened.

To unzip something literally means to open a zipped fastener, such as the one on your jacket or backpack. It is the action that reverses the process of zipping—releasing the interlocking teeth to create an opening. For example: "She unzipped her coat as she came inside."

However, "unzip" has taken on a second life in the digital age. When you download a file from the internet, it often arrives compressed, meaning it has been made smaller for easier transfer. To access the contents of that file, you need to "unzip" it, which expands the data back to its original size. Example: "I had to unzip the downloaded folder before I could view the photos."

These two uses cover almost all common cases. In everyday speech, people most often use the word for clothing, bags, tents, and similar objects with zippers, or for computer files such as ZIP folders. The shared idea is opening something that was closed or packed tightly.

So, whether you're opening a jacket or accessing the contents of a downloaded folder, "unzip" is about making something closed accessible again.