Princeton's WordNet
twilight, dusk, gloaming, gloam, nightfall, evenfall, fall, crepuscule, crepuscle(noun)
the time of day immediately following sunset
Synonyms:
gloam, crepuscle, declension, declination, pin, fall, surrender, gloaming, evenfall, descent, capitulation, decline, declivity, downslope, drop, autumn, dip, dusk, tumble, crepuscule, twilight, free fall, spill, nightfall, downfall
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