Where does “δεινός” come from?

δεινός (Ancient Greek) comes from Ancient Greek ὄνυξ, from Proto-Indo-European h₃nogʰ- — claw, nail; nail.

δεινός (Ancient Greek): terrible, horrible, fearful, astounding; danger;...

Definitions

  1. terrible, horrible, fearful, astounding; danger;...

Ancestry of “δεινός”, step by step

δεινός traces back through two separate lines of ancestry.

via Ancient Greek ὄνυξ

StepLanguageWordMeaning
1Ancient Greekὄνυξclaw, nail, hoof, talon; Anything which resembles...
2Proto-Indo-Europeanh₃nogʰ-claw, nail; nail

via Proto-Indo-European dwey-

StepLanguageWordMeaning
1Proto-Indo-Europeandwey-to fear

Words derived from “δεινός

Every word from Proto-Indo-European h₃nogʰ-Every word from Ancient Greek ὄνυξ