say it: THUHN-dur-struhk
thunderstruck is an adjective meaning "as if struck dumb with astonishment and surprise". It carries one recorded sense.
as if struck dumb with astonishment and surprise
“a circle of policemen stood dumbfounded by her denial of having seen the accident”
“the flabbergasted aldermen were speechless”
“was thunderstruck by the news of his promotion”
Definitions, synonyms and semantic relations for thunderstruck come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.