Synonyms|66Antonyms|0|Broader|0Narrower|0Related|9
14
eye-opening(adjective, astonishing, amazing, astounding, dumbfounding)
5
astonishing
4
dumbfounding
4
stunning
4
stupefying
3
amazing(informal, adjective, cause, emotion)
3
astounding
3
blindsiding
3
startling
2
dumfounding
2
jarring
2
jaw-dropping
2
jolting
2
prodigious
2
shocking
2
surprising
1
perplexing
1
baffling
1
bewildering
1
dazing
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ChicagoSmart Define. 2015. "flabbergasting thesaurus" https://smartdefine.org/flabbergasting/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, flabbergasting thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/flabbergasting/thesaurus/synonyms>.
MLASmart Define. "flabbergasting thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/flabbergasting/thesaurus/synonyms>