sneak peek
noun /ˌsniːk ˈpiːk/
/ˌsniːk ˈpiːk/
(informal)- an opportunity to have a quick look at something such as a film before it is officially available
- Watch a sneak peek of Pam and Frankie's first night out in our online video.
- The magazine has obtained an exclusive sneak peek of the couple preparing for their big day.