The Old Norse word dimmar
Word dimmar
d i m m a r
Meaning dark, gloomy
See also Hittite: da-an-ku-iš ‘black, dark’
Synonyms døkkr, myrkr, ókátr

Other words that might be of interest
eisa ‘fire’, eldr ‘fire’, aska ‘ashes’, skírr ‘clear, bright’, dimma ‘darkness’, logi ‘flame, blaze’, heitr ‘hot, burning’, nátt ‘night’, skuggi ‘shadow’, reykr ‘smoke, steam’, sól ‘sun’, sunna ‘sun’