Synonyms and Antonyms of dumbstruck
- the dumbstruck ecotourists gaped in silence as the enormous whale breached near their vessel
amazed, astonished, astounded, awestruck (also awestricken), bowled over, dumbfounded (also dumfounded), flabbergasted, shocked, stunned, stupefied, thunderstruck
blindsided, startled, surprised (also surprized)
aghast, appalled, dismayed, horrified
blasé (also blase), casual, nonchalant, unruffled