dumbstruck

affected with sudden and great wonder or surprise the dumbstruck ecotourists gaped in silence as the enormous whale breached near their vessel Synonyms amazed, astonished, astounded, awestruck (also awestricken), bowled over, dumbfounded (also dumfounded), thunderstruck, flabbergasted, shocked, stunned, stupefiedRelated Words blindsided, startled, surprised (also surprized); aghast, appalled, dismayed, horrified; bewildered, confused, dazed, overwhelmed; agape, awed, awesome, openmouthed, wide-eyed, widemouthedNear Antonyms blasé (also blase), casual, nonchalant, unruffled