• A variation on the pop-up window. A pop-under opens a new browser window under the active window. Pop-unders do not interrupt the user immediately, but appear when the user closes the covering window, making it more difficult to determine which website created them. Pop-unders can be considered a dark pattern. ← Wikipedia

1. Related terms: Pop-up, Pop-over, Modal, Window-Eyes
2. Previous term: Pop-over
3. Next term: Pop-up
4. Random term: Universal XSS (webglossary.info/random 🎲)