gross, thick dark cloud,

Probably from araph; gloom (as of a lowering sky) -- (gross, thick) dark (cloud, -ness).

see HEBREW araph

בָּעֲרָפֶֽל׃ בערפל׃ הָֽעֲרָפֶ֔ל הערפל וְהָֽעֲרָפֶ֔ל וַ֝עֲרָפֶ֗ל וַעֲרָפֶ֔ל וַעֲרָפֶ֖ל וַעֲרָפֶ֣ל וַעֲרָפֶֽל׃ והערפל וערפל וערפל׃ לַעֲרָפֶֽל׃ לערפל׃ עֲרָפֶ֣ל ערפל ‘ă·rā·p̄el ‘ărāp̄el araFel bā‘ărāp̄el bā·‘ă·rā·p̄el baaraFel hā‘ărāp̄el hā·‘ă·rā·p̄el haaraFel la‘ărāp̄el la·‘ă·rā·p̄el laaraFel vaaraFel vehaaraFel wa‘ărāp̄el wa·‘ă·rā·p̄el wə·hā·‘ă·rā·p̄el wəhā‘ărāp̄elInterlinear Greek • Interlinear Hebrew • Strong's Numbers • Englishman's Greek Concordance • Englishman's Hebrew Concordance • Parallel Texts