aghast, backlash, consternation, disconcerting, flabbergasted, flinch, flustered, frantic, furore, incensed, infuriate, intercept, irate, jostle, livid, perturbed, proactive, protester, provoke, reprisal, resent, retaliate, seethe, skittish, timid, timorous, trepidation, umbrage, unnerving