Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
stupefied is an adjective meaning "as if struck dumb with astonishment and surprise". It carries 2 recorded senses.
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 stupefied come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.