Unpick (verb)

To undo or unravel.

Origin:

From the old english word "unpician" meaning to undo or unravel.

Examples:

1. I had to unpick the seams of my shirt to fix a tear.
2. She unpicked the knot in the thread.
3. He had to unpick the lock to get into the room.
4. They had to unpick the knots in the fishing line.
5. I needed to unpick the code to find the bug.