ABRUPTNESS
abruptness, brusqueness, curtness, gruffness, shortness
(noun) an abrupt discourteous manner
abruptness, precipitateness, precipitousness, precipitance, precipitancy, suddenness
(noun) the quality of happening with headlong haste or without warning
abruptness, precipitousness, steepness
(noun) the property possessed by a slope that is very steep
Source: WordNet® 3.1
Etymology
Noun
abruptness (usually uncountable, plural abruptnesses)
The state of being abrupt or broken [First attested in the early 17th century.]
Suddenness; unceremonious haste or vehemence. [First attested in the early 17th century.]
Synonyms
• (suddenness): spontaneity, subitaneousness; see also suddenness
Source: Wiktionary
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.
Source: Webster’s Unabridged Dictionary 1913 Edition