1. to separate or remove something that is stuck or adhered to something else
2. to free something that is jammed or unable to move

Examples

• She carefully unstuck the old photograph from the album page.
• The mechanic had to unstick the rusty bolt with penetrating oil.
• I used a hair dryer to unstick the stubborn price tag.
• The drawer was painted shut, but we managed to unstick it.
• He unstuck the envelope flap to read the letter inside.
• The zipper was stuck, so she gently unstuck it with soap.