splenetic
From Longman Dictionary of Contemporary Englishspleneticsple‧net‧ic /spləˈnetɪk/ adjective formal BAD-TEMPEREDbad-tempered and often angryExamples from the Corpussplenetic• The crude and splenetic expression and presentation of such views suggested irrational pathological prejudice rather than a coherent ideology.• Dennis Jarrett replies: A somewhat splenetic reaction, Mr Francis, to be sure.Origin splenetic (1500-1600) Late Latin spleneticus, from Latin splen; → SPLEEN