spleenful /ˈspliːnfəl/noun 2adjective 1forms 2 noun2 •A quantity of invective. •More than one can take.But suddenly, inexplicably, I've had a spleenful of it, and I'm going for the kid. — 2002 adjective1 •Full of spleen; spiteful.His fluency was as remarkable as ever, and at first as spleenful; by-and-by his outrageous mood gave way, and, in response to some of Rainham's adroit thrusts, he condescended to stand on his defence. — 1893 formsmore spleenful · most spleenful