Abruptness definitions

Webster's 1828 Dictionary

ABRUPT'NESS, n.
1. A state of being broken; craggedness; steepness.
2. Figuratively, suddenness; unceremonious haste or vehemence.

WordNet (r) 3.0 (2005)

n
1: an abrupt discourteous manner [syn: abruptness, brusqueness, curtness, gruffness, shortness]
2: the property possessed by a slope that is very steep [syn: abruptness, precipitousness, steepness] [ant: gentleness, gradualness]
3: the quality of happening with headlong haste or without warning [syn: abruptness, precipitateness, precipitousness, precipitance, precipitancy, suddenness]

Merriam Webster's

noun see abrupt

Webster's 1913 Dictionary

Abruptness Ab*rupt"ness, n. 1. The state of being abrupt or broken; craggedness; ruggedness; steepness. 2. Suddenness; unceremonious haste or vehemence; as, abruptness of style or manner.