General:
* Rush: A quick and hurried movement.
* Hurriedness: The state of being hurried.
* Impetuosity: Acting quickly without thinking carefully.
* Precipitousness: The quality of being sudden and unexpected.
* Rashness: Acting without thinking or planning carefully.
* Abruptness: A sudden and unexpected change.
Specific to actions:
* Scramble: A hurried and disorganized movement.
* Dash: A quick run or movement.
* Scamper: A light and hurried run.
* Bolt: A sudden and rapid movement.
* Spurt: A sudden and brief burst of activity.
* Flurry: A sudden and brief burst of activity, often involving many things.
For decisions:
* Impulsiveness: Acting on a sudden whim without thinking.
* Recklessness: A lack of care for the consequences of one's actions.
* Blindness: Acting without considering all the facts.
* Blind leap: A decision made without considering the consequences.
The best noun to use will depend on the specific context and the nuance you want to convey.