semidarkness (noun) dark: place, time without light
Sinonime: caliginosity,
darkness, dead of night, dimness,
dusk, duskiness,
evening,
gloom,
midnight, murk, murkiness,
night, nightfall, nighttime,
obscurity, opacity, semidarkness,
shade, shadows,
twilight, witching hour
Antonime: brightness,
day, daylight, daytime,
illumination,
light, lightness,
morning