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