Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
demoniacally is an adverb meaning "in a very agitated manner; as if possessed by an evil spirit". It carries one recorded sense.
in a very agitated manner; as if possessed by an evil spirit
Definitions, synonyms and semantic relations for demoniacally come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .