Abbott-Smith Manual Greek Lexicon
ζόφος (G2217)
5 ** ζόφος , -ου, ὁ (akin to γνόφος , q.v.), [in Sm.: Ex 10:22 , Jb 28:3 , Ps 10(11):2 90(91):6 , Is 59:9 *;] in Hom. the gloom of the under-world ; hence, darkness , deep gloom (poët. and late prose writers): He 12:18 , II Pe 2:4 , 17 , Ju 6 , 13 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain