Focus on the pronunciation of pop-up
English definition of “pop-up”
/ˈpɒpʌp/ adjective [before noun]
› E-COMMERCE, MARKETING used to describe an advertisement that is shown in a new window in front of the window that you are looking at on a website: pop-up ads
› used to describe something that appears suddenly, and usually exists for a limited time: At the new pop-up restaurant that has appeared in the neighborhood, diners pay what they think the meal is worth.