thunderstruck

affected with sudden and great wonder or surprise the teen was thunderstruck when his parents told him he had been adopted Synonyms amazed, astonished, astounded, awestruck (also awestricken), bowled over, dumbfounded (also dumfounded), dumbstruck, flabbergasted, shocked, stunned, stupefied Related Words blindsided, startled, surprised (also surprized); aghast, appalled, dismayed, horrified; bewildered, confused, dazed, overwhelmed; agape, awed, awesome, openmouthed, wide-eyed, widemouthed Near Antonyms blasé (also blase), casual, nonchalant, unruffled