Green’s Dictionary of Slang

violent, boisterous, noisy, strongly self-assertive, pompous.

c.1600		Shakespeare Hamlet III:ii: O, it offends me to the soul to hear a robustious periwig-pated fellow tear a passion to tatters.
1738		Swift Polite Conversation 50: Poh; you are so robustious: You had like to put out my eye.
1824		Pierce Egan’s Life in London 10 Oct. 6/3: I can’t say much for the man but the woman was outrageously robustive and obstropolous.
1839		Disraeli in Letters (1887) 163: They had a roaring, robustious, romping party, of which he gave very amusing details .
1842		Exeter & Plymouth Gaz. 22 Oct. 4/1: Still in robustious youth, when they are fled, Unharm’d.
1853		Putnam’s Mag. Sept. in Schele De Vere (1872) 628: A pair of spanking bays flanked the pole, and a strapping, robustious, fellow with immense whiskers rode on the box.
1864		Western Dly Press 29 Sept. 3/1: He was too tame, the bad opposite of the too robustious.
1872		Schele De Vere Americanisms 628: Robustious, instead of robust, used by persons who love to be emphatic, even at the cost of vulgarity.
1875		Western Times (Devon) 4 June 8/4: Shakespeare speaks of ‘the robustious periwig-pated fellows that tear a passion to tatters’.
1888		Daily News 29 Oct. in Ware (1909) 210/1: Mr Barnes’s unfortunate tendency on this occasion was to a rather ‘robustious periwig-pated’ style that sits ill upon the shoulders of so sentimental a personage as Lord Lytton’s Claude Melnotte.
1892		Liverpool Echo 20 Oct. 4/2: A Too Robustious Suitor . Higgins [was] fined £20 and costs [...] for assaulting a lady whom he had asked to marry him.
1901		Worcs. Chron. 6 July n.p.: The Bishop [...] refused to sit calmly down to his potatoes and cabbages while the Boers were becoming robustious on roast beef.
1912		Hull Dly Mail 2 Apr. 3/4: The ‘robustious’ pantomimic sing-song, ‘The Pride of Byzantia’.
1926		Cork Examiner 26 Aug. 6/6: The robustious, confuident, bracing young man.
1937		Western Morn. News 26 July 6/2: There is plenty of envy, an enviable quality in every robustious order of society.
1947		Dundee Courier 13 June 2/1: Robustious rhetoric [...] will not take us far without practical exertions to translate it into reality.
1964		E. Wilson Earl Wilson’s New York 24: Willene Barton saxophoned it to the limit, rocking the instrument up and down in front of her, in a robustious performance.