brumous
Foggy or misty; wintry.
literary
The blond misses of Albion see nothing in the dull inhabitants of their brumous isle, which can compare with the ardour and vivacity of the children of the South. We bring our sunshine with us; we are Frenchmen, and accustomed to conquer.
Where it comes from
From brume + -ous, probably modelled after French brumeux (“foggy, hazy, misty”), from Late Latin brūmōsus (“wintry”), from Latin brūma (“winter solstice; winter; winter cold”) + -ōsus (suffix forming adjectives from nouns). Brūma is derived from brevima, brevissima (“shortest”), the superlative of brevis (“brief; short”) (the winter solstice being the shortest day of the year), ultimately from Proto-Indo-European *mréǵʰus (“brief, short”).
Adapted from the Wiktionary entry brumous (CC BY-SA 4.0).