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