1) Bad-tempered 2) Irascible 3) Lienal 4) Lymphatic tissue 5) Lymphoid tissue 6) Of or relating to the spleen 7) Splenic 8) Very irritable Found on https://www.crosswordclues.com/clue/splenetic
Splen'e·tic adjective [ Latin spleneticus : confer French splénétique . See Spleen .] Affected with spleen; malicious; spiteful; peevish; fretful. ' Splenetic guffaw.' G. Eliot. « You humor me when I am sick; Why not when I am splenetic ?» ... Found on http://www.encyclo.co.uk/webster/S/168