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Webster 1913 Edition

Noun.

The quality or state of being hasty; haste; precipitation; rashness; quickness of temper.

Noun.

Haste; speed; quickness or celerity in motion or action, as of animals.

Rashness; heedless eagerness; precipitation. Our hastiness to engage in the war caused deep regret.

Irritability; susceptibility of anger, warmth or temper.

hastiness ‎(countable and uncountable, plural hastinesses)

characteristic of being hasty