mercurial (adjective) mercurial: flighty, temperamental
Sinonime: aggressive,
anxious,
ardent,
aspiring,
avid, ball of fire, bent upon, climbing, come on, come on strong, designing,
desirous,
determined,
driving,
eager, eager beaver,
earnest,
energetic,
enterprising,
enthusiastic, fireball, get up and go, go-getter, goal-oriented, hard ball, high-reaching,
hopeful,
hungry,
industrious,
inspired,
intent,
longing, power-loving,
purposeful,
pushing,
pushy*,
resourceful, self-starting,
sharp, soaring,
striving,
thirsty, vaulting,
zealousAntonime: content,
fulfilled,
satisfied,
unassuming