1 Broken off; very steep, or craggy, as rocks, precipices, banks; precipitous; steep; as, abrupt places. “Tumbling through ricks abrupt,” Thomson.
2 Without notice to prepare the mind for the event; sudden; hasty; unceremonious. “The cause of your abrupt departure.” Shak.
3 Having sudden transitions from one subject to another; unconnected. The abrupt style, which hath many breaches. B. Jonson.
Suddenly terminating, as if cut off. Gray.
An abrupt place. [Poetic] “Over the vast abrupt.” Milton.
To tear off or asunder. [Obs.] “Till death abrupts them.” Sir T. Browne.