darkness, dimness

MURKINESS
WordClue
DUSKdarkness, obscurity
GLOOMDarkness, dimness or obscurity
HEART... of Darkness (Conrad)
SHADEdarkness, murkiness
DIMNESSdarkness, gloom
OPACITYobscurity, dimness
DARKNESSdimness, gloom
NIGHTFALLdarkness, dusk
OBSCURITYopacity, dimness
PESSIMISMgloom
OBSCURITYDarkness
GLOOMDarkness, dimness or obscurity