"Instabuy" is a term used to describe an immediate purchase made online, typically on e-commerce websites or mobile applications. It refers to a buying decision that is made quickly and without much deliberation, often because the product is perceived as highly desirable, valuable, or necessary, and the buyer does not want to miss out on the opportunity to acquire it. The term "instabuy" can also be used to describe a feature on some e-commerce platforms where customers can make purchases with just one click, without having to go through a lengthy checkout process.