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