noun

concern and distress caused by something unexpected.

to his dismay, she left him

alarm,shock,surprise,consternation,concern,perturbation,disquiet,disquietude,discomposure,distress,upset,anxiety,trepidation,fear

verb

cause (someone) to feel concern and distress.

they were dismayed by the U-turn in policy

appal,horrify,shock,shake,shake up,disconcert,take aback,confound,surprise,startle,alarm,frighten,scare,daunt,discomfit,unnerve,unman,unsettle,throw off balance,discompose,discountenance,trouble,bother,concern,perturb,disturb,upset,distress,sadden,dishearten,dispirit,rattle,spook,faze,psych,knock sideways,knock for six,pother