verb (used with object), un·zipped, un·zip·ping.
verb (used without object), un·zipped, un·zip·ping.
Examples from the Web for unzip
I undo the button, but before I unzip him I let my fingers wander, tracing his erection through the soft denim.Speed Read: 12 Naughty Bits From ‘50 Shades Darker’|Lizzie Crocker|May 4, 2012|DAILY BEAST
Someone tried to unzip the pants of one of the women I was with.
Then unzip another layer to make room for the Saigon cinnamon doughnuts with dulce de leche.