saturnine

adjective

1 he was a rather saturnine individual who never spoke an unnecessary word:

gloomy, sombre, melancholy, melancholic, moody, miserable, lugubrious, dour, glum, unsmiling, humourless, grumpy, bad-tempered;

taciturn, uncommunicative, unresponsive.

▷antonyms cheerful, jovial.

2 his saturnine good looks:

swarthy, dark, dark-skinned, dark-complexioned;

mysterious, mercurial, moody.

saturnine Oxford Dictionary of English