Synonyms and related words :
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