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