Spleen'ful adjective Displaying, or affected with, spleen; angry; fretful; melancholy. « Myself have calmed their spleenful mutiny.» Shak. « Then rode Geraint, a little spleenful yet, Across the bridge that spann'd the dry ravine.» Tennyson. Found on http://www.encyclo.co.uk/webster/S/168