donnybrookian adjective1 •(US, Australia) Of or pertaining to a donnybrook; bellicose; disconcerted; raucous; clashing.Hereupon Ted drew forth his cudgel, hit the Turk a donnybrookian whack over the skull that laid him flat on the ground, and took to his heels. — 2012 formsmore donnybrookian · most donnybrookian