出典:Wiktionary
From brume + -ous, probably modelled after French brumeux (“foggy, hazy, misty”),[1] from Late Latin brūmōsus (“wintry”),[2] 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”).
brumous (comparative more brumous, superlative most brumous)