Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
credulously is an adverb meaning "in a credulous manner". It carries one recorded sense.
in a credulous manner
“the children followed the teacher credulously”
Definitions, synonyms and semantic relations for credulously come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.