unknot

To untie or undo (a knot).

In knot theory, a knot that can be unraveled in three-dimensional space into an untangled loop without cutting it or intersecting it with itself.

To free from knots; untie.

To free from knots; to untie.

In knot theory, a loop that is not knotted.

To undo (a knot).

become or cause to become undone by separating the fibers or threads of