Jagged (adjective)

1. Having a rough or irregular edge or surface, as if broken or torn.
2. Having a harsh or uneven quality.

Origin:

Late middle english (also in the sense "having a saw-like edge"): from old french jagé, from jag "a saw", of unknown origin.

Examples:

1. The jagged rocks along the shoreline were dangerous.
2. The jagged edges of the broken glass were sharp.
3. The jagged pattern of the lightning bolt was mesmerizing.
4. The jagged mountain peaks were covered in snow.
5. The jagged line on the graph indicated a sudden change.