NIGHNESS is a playable word

nighness Scrabble® Dictionary

noun
pl. nighnesses
the state of being nigh
86 Playable Words can be made from "NIGHNESS"
   2-Letter Words (11 found)
   3-Letter Words (22 found)
   6-Letter Words (6 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)