abruptness

nouns

an abrupt discourteous manner
abruptness, brusqueness, curtness, gruffness, shortness
is derived from
abrupt
the property possessed by a slope that is very steep
abruptness, precipitousness, steepness
is derived from
abrupt
antonym
gradualness
the quality of happening with headlong haste or without warning
abruptness, precipitance, precipitancy, precipitateness, precipitousness, suddenness
is derived from
abrupt