Saturnine

1. a. Of or pertaining to lead; characterized by, or resembling, lead, which was formerly called Saturn.
2. a. Born under, or influenced by, the planet Saturn.
3. a. Heavy; grave; gloomy; dull; — the opposite of mercurial; as, a saturnine person or temper.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.