Definition of rumbustious adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//rʌmˈbʌstʃəs//
; NAmE NAmE//rʌmˈbʌstʃəs//
(especially British English) (usually North American English rambunctious) [usually before noun] (informal) Energetic
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full of energy in a cheerful and noisy way synonym boisterous a crowd of rumbustious football fans See related entries: Energetic Word Originlate 18th cent.: probably an alteration of archaic robustious ‘boisterous, robust’.