English dictionarytumultuous adjective Copy definition Share Print / Save as PDFPronunciation /tjʊˈmʌl.tjʊ.əs/ /-ˈməl-/Parts of speech adjectiveDefinitionsadjectiveCharacterized by loud, confused noise.Causing or characterized by tumult; chaotic, disorderly, turbulent.Synonyms noisy uproarious riotous tempestuous tumultuaryAntonyms untumultuous