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