impatience (n.)

• alacrity
• animation
• anxiety
• anxiousness
• appetite
• avidity
• avidness
• eagerness
• elan
• forwardness
• gust
• gusto
• haste
• hastiness
• impetuosity
• impetuousness
• impulsiveness
• keenness
• life
• liveliness
• precipitance
• precipitancy
• precipitateness
• precipitation
• promptness
• quickness
• rashness
• readiness
• recklessness
• spirit
• suddenness
• verve
• vitality
• vivacity
• zest
• zestfulness