adjective. Unexpectedly sudden.

adjective. Surprisingly curt; brusque.

adjective. Touching on one subject after another with sudden transitions.

adjective. Steeply inclined. synonym: steep.

adjective. Terminating suddenly rather than gradually; truncate.

To break off; interrupt; disturb.

Broken or appearing as if broken away or off; marked by or showing a sudden breach or change of continuity; wanting continuation or completion: as, the path or the discourse came to an abrupt termination; an abrupt turn in a road. Hence Steep; precipitous: as, an abrupt cliff; an abrupt descent.

Figuratively, sudden; without notice to prepare the mind for the event; unceremonious: as, an abrupt entrance or address.

Lacking in continuity; having sudden transitions from one subject to another: as, an abrupt style.

In botany, terminating suddenly: as, an abrupt point: sometimes used in the sense of truncate: as, an abrupt leaf.

noun. An abrupt place; a precipice or chasm.

noun. An abrupt place.

transitive verb. To tear off or asunder.

adjective. Broken off; very steep, or craggy, as rocks, precipices, banks; precipitous; steep.

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

adjective. Having sudden transitions from one subject to another; unconnected.

adjective. Suddenly terminating, as if cut off.

adjective. extremely steep

adjective. surprisingly and unceremoniously brusque in manner

adjective. marked by sudden changes in subject and sharp transitions

adjective. exceedingly sudden and unexpected

"The term abrupt climate change arose in the study of past climate."

abrupt-pinnate  

disconnected  discourteous  staccato  steep  sudden  

corrupt  disrupt  erupt  interrupt  upped  

curt  final  harsh  hasty  momentary  

aggressive  arduous  bearish  beastly  bluff