Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
excitingly is an adverb meaning "in an exciting manner". It carries one recorded sense.
in an exciting manner
“at the time of its appearance, the movie must have seemed excitingly new, even revolutionary”
Definitions, synonyms and semantic relations for excitingly come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.