Saturnine

Webster's Dictionary of the English Language

·adj Born under, or influenced by, the planet Saturn.

II. Saturnine ·adj Heavy; grave; gloomy; dull;

— the opposite of mercurial; as, a saturnine person or temper.

III. Saturnine ·adj Of or pertaining to lead; characterized by, or resembling, lead, which was formerly called Saturn.