donnybrook /ˈdɒnɪbɹʊk/adjective 1noun 1forms 1 adjective1 •Chaotic. noun1 •A brawl or fracas; a scene of chaos.But the Hindus turned out and broke their heads; when, finding lawlessness pleasant, Hindus and Muhammadans together raised an aimless sort of Donnybrook just to see how far they could go. — 1888 formsdonnybrooks