Synonyms for Saturnine (same or very similar meaning)
WordNet sense 1 (expressing or expressive of ridicule that wounds):
sarcastic
WordNet sense 2 (showing a brooding ill humor):
dark, dour, glowering, glum, moody, morose, sour, sullen
WordNet sense 3 (having an irritable and unpleasant disposition):
ill-natured
From the ODE community, based on WordNet
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