Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unluckily is an adverb meaning "by bad luck". It carries one recorded sense.
by bad luck
“unfortunately it rained all day”
“alas, I cannot stay”
Definitions, synonyms and semantic relations for unluckily come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.