abrupt

Something which is abrupt; an abyss.

To tear off or asunder.

To interrupt suddenly.

Broken away (from restraint).

Without notice to prepare the mind for the event; sudden; hasty; unceremonious.

"The party came to an abrupt end when the parents of our host arrived."

Curt in manner.

Having sudden transitions from one subject or state to another; unconnected; disjointed.