sepulchral

Something that reminds you of death is sepulchral. A dreary, misty graveyard at night usually feels sepulchral.

A sepulchre is a tomb or a crypt — a kind of stone room meant for burying a dead body. Something that's sepulchral reminds you of a sepulchre, either because it looks or feels like an actual tomb, or simply because it makes you think of death or dying. An empty building might be sepulchral, or a gloomy gathering. The Latin root word is sepelire, "to bury or embalm."

Definitions of sepulchral
1

adj of or relating to a sepulchre

sepulchral inscriptions”
sepulchral monuments in churches”

adj suited to or suggestive of a grave or burial

“hollow sepulchral tones”
Synonyms:
funereal
joyless
not experiencing or inspiring joy

adj gruesomely indicative of death or the dead

“the sepulchral darkness of the catacombs”
Synonyms:
charnel, ghastly
offensive
unpleasant or disgusting especially to the senses