| nonplussed(verb, adjective) | |
| perplexed(verb, adjective) | |
| startled(verb, adjective, amazed, thunderstruck) | |
| tongue-tied(adjective, awkward, silent, dazed, dumb) | |
| dumbstricken | |
| awestruck(adjective, amazed, thunderstruck) | |
| baffled(verb, adjective) | |
| inarticulate(adjective, awkward, silent, dazed, dumb) | |
| staggered(verb, adjective, amazed, thunderstruck) | |
| staring(adjective, astonished) | |
| agog | |
| bemused | |
| dismayed(verb, adjective, amazed, thunderstruck) | |
| dumb(adjective, shaky, faint, confused, silent) | |
| fascinated(adjective, astonished) | |
| floored(verb, adjective) | |
| gobsmacked(adjective, overcome, amazed, astonished, speechless) | |
| marveling(adjective, astonished) | |
| mute(adjective, awkward, silent, dazed, dumb) | |
| openmouthed |
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| APA | Smart Define. (2015). dumbfounded thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/dumbfounded/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "dumbfounded thesaurus" https://smartdefine.org/dumbfounded/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, dumbfounded thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/dumbfounded/thesaurus/synonyms>. |
| MLA | Smart Define. "dumbfounded thesaurus" 3 August 2015. Web. 22 September 2026. <https://smartdefine.org/dumbfounded/thesaurus/synonyms> |