Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unfashionably is an adverb meaning "in an unfashionable manner". It carries one recorded sense.
in an unfashionable manner
“she seemed to make a point of being unfashionably dressed”
Definitions, synonyms and semantic relations for unfashionably come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .