The Collaborative International Dictionary of English v.0.48:
Hastiness \Has"ti*ness\, n. The quality or state of being hasty; haste; precipitation; rashness; quickness of temper. [1913 Webster]WordNet (r) 3.0 (2006):
hastiness n 1: overly eager speed (and possible carelessness); "he soon regretted his haste" [syn: haste, hastiness, hurry, hurriedness, precipitation] 2: hasty impulsiveness