an excited state or condition.

something that excites.

noun

apathy , boredom , calm , calmness , dullness , lull , peace , imperturbation , non-chalance , serenity

noun

action , activity , ado , adventure , agitation , animation , bother , buzz * , commotion , confusion , discomposure , disturbance , dither * , drama , elation , emotion , excitation , feeling , ferment , fever , flurry , frenzy , furor , fuss , heat * , hubbub * , hullabaloo * , hurry , hysteria , impulse , instigation , intoxication , kicks , melodrama , motivation , motive , movement , passion , perturbation , provocation , rage , stimulation , stimulus , stir , thrill , titillation , to-do * , trepidation , tumult , turmoil , urge , warmth , wildness , arousing , awakening , ebullition , fillip , flap , furore , hubbub , hullabaloo , incitement , inquietude , sensation , tingling