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