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