perturbation Synonyms

disruption disturbance upset fluster hysteria inquietude hurly-burly misgiving misperception horror heartquake fright edginess foreboding flutter floccillation fermentation ferment fearfulness nervosity nervousness palpitation angst nerves jitters restlessness disquietude worry unrest uneasiness unease turmoil turbulence tumult trouble trepidation terror tension panic fear excitation consternation confusion concern commotion carphology butterflies bewilderment bedevilment bafflement