Dictionary

rumbustious en · ADJ

Etymology

Uncertain but probably variation of robustious (“robust, large, noisy, violent”), from robust + -ious. Alternatively, from rum- (“nonsense syllable”) + bust + -ious.

Meanings

1. (UK, informal) Synonym of rambunctious, boisterous and unruly.
   • Joe Githongo had paid a personal price during the Moi era, and proved his credentials during the rumbustious multi-party years, working as a fundraiser for Kibaki’s Democratic Party. 2009, Michela Wrong, It’s Our Turn to Eat: The Story of a Kenyan Whistle Blower:
   • “Childer! Borne ’em I ’ave, an’ buried ’em I ’ave, but now I can’t seem to do wi’ their clatter no more—young things is that restless an’ rumbustious.” 1912, Blanche Edith Baughan, “Red and Yellow and Ripe”, in Brown Bread from a Colonial Oven:
   • Since Trump returned to office in January last year, Pete Hegseth, the rumbustious defense secretary who has made it his mission to remake a military ethos he denounced as “woke”, has fired or forcibly retired 24 generals and senior commanders, with no performance-related reason given. 2026 May 3, Robert Tait, “‘This is just disarray’: alarm inside Pentagon after Hegseth staff purges”, in The Guardian, →ISSN:
   • In the rumbustious atmosphere of the mania years, 1845 and 1846, this state of things gave rise to acrimony which both sides faced with confidence; but as the reaction set in during 1847, it seemed better to come to terms. 1955 February, Michael Robbins, “A Railway Treaty: The Brighton and South Eastern Agreement of 1848”, in Railway Magazine, page 98:

Forms

Deriveds

rumbustical (uncertain but probable derivations) · rambunctious · rumbustiousness · rumbustiously

Relateds

rumbullion

Synonyms

boisterous and unruly · rambunctious