impulsiveness (n.)
- abruptness
- alacrity
- capriciousness
- eccentricity
- expeditiousness
- feverishness
- fickleness
- flightiness
- forwardness
- freakishness
- furiousness
- haste
- hastiness
- hurriedness
- impatience
- impetuosity
- impetuousness
- impulse
- inconsistency
- inconstancy
- instability
- irregularity
- moodiness
- precipitance
- precipitancy
- precipitateness
- precipitation
- precipitousness
- precociousness
- precocity
- prematureness
- prematurity
- promptness
- quickness
- rashness
- recklessness
- restlessness
- rush
- shiftiness
- speed
- suddenness
- swiftness
- uncertainty
- undependability
- unpredictability
- unreliability
- unrestraint
- unstableness
- unsteadiness
- untimeliness
- variability
- variation
- variety
- wantonness
- whimsicality
