excitable

Synonyms: agitable alarmable demonstrative edgy emotional enthusiastic fidgety fierce fiery galvanic hasty high-strung hot-headed hot-tempered hysterical impatient impetuous impulsive inflammable intolerant irascible mercurial moody nervous neurotic overzealous passionate peevish quick quick-tempered rash reckless restless sensitive short fused skittish susceptible temperamental testy touchy uncontrolled uneasy vehement violent volatile volcanic

Antonyms: calm easy easy-going insensitive laid-back passive unexcitable uninspired