Quick Definition
darkness, gloom
Strong's Definition
gloom (as of a storm)
Derivation: akin to G3509 (νέφος);
KJV Usage: blackness
Thayer's Greek Lexicon
γνόφος, γνόφου, ὁ (for the earlier (and poetic) δνόφος, akin to νέφος (so Alexander Buttmann (1873) Lexil. 2:266; but see Curtius, pp. 704f, 706, cf. 535; Vanicek, p. 1070)), darkness, gloom: Heb_12:18. (Aristotle, de mund. c. 2 at the end, p. 392b, 12; Lucian, de mort. Peregr. 43; Dio Chrysostom; the Sept. also for ςΘπΘο a cloud, Deu_4:11, etc. and for ςΒψΘτΖμ 'thick cloud,' Exo_20:21, etc.; (Trench, § c.).)
Mounce Concise Greek Dictionary
γνόφος gnophos 1x
a thick cloud, darkness, Heb_12:18
Abbott-Smith Greek Lexicon
γνόφος , -ου , ὁ
(later form of δν -),
[in LXX for H651 , H6205 , etc.;]
darkness, gloom (including "an element of tempest," Tr., Syn. , § c ): Heb_12:18 .†
SYN.: ἀχλύς G887 , ζόφος G2217 , σκότος G4655 (Tr., l.c .; DB , i, 457 a ).
Moulton & Milligan — Vocabulary of the Greek NT
γνόφος [page 129]
Vettius Valens, p. 145 .16 , ἀστασία ἀνέμων γίνεται καὶ γνόφος . The use of ὁ γνόφος for the earlier and poetic ὁ δνόφος begins with Aristotle.
Liddell-Scott — Intermediate Greek Lexicon
γνόφος [Etym: = δνόφος, Luc. ]
STEPBible — Tyndale Abridged Greek Lexicon
γνόφος (later form of δν-),
[in LXX for אָפֵל, עֲרָפֶל, etc. ;]
darkness, gloom (including "an element of tempest," Tr., Syn., §with): Heb.12:18.†
SYN.: ἀχλύς, ζόφος, σκότος (Tr., l.with; DB, i, 457a). (AS)