(n.) The quality of being impatient; want of endurance of pain, suffering, opposition, or delay; eagerness for change, or for something expected; restlessness; chafing of spirit; fretfulness; passion; as, the impatience of a child or an invalid.

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