Where does “frighteningly” come from?

Frighteningly derives from English frighten, English fright, and English affright, tracing through Old English -ing to Proto-Indo-European līg- and ḱóm.

frighteningly (English): In a frightening or terrifying manner; Very;...

Definitions

  1. In a frightening or terrifying manner; Very;...

Ancestry of “frighteningly”, step by step

StepLanguageWordMeaning
1EnglishfrighteningCausing fear; of capable of causing fear; scary;...
2English-ingUsed to form gerunds, a type of verbal nouns,...
3Old English-ingForming nouns from verbs, indicating action,...
4Old English-tūnhomestead, village, town
5Old Englishtūnenclosure, yard; place; dwelling
6Proto-West Germanictūnfence
7Proto-Germanictūnąfence; enclosure
8Gaulishdunumfort; hill, hillfort
9Proto-Celticdūnomstronghold, rampart
10Proto-Indo-Europeandʰewh₂-smoke; mist, haze
Every word from Proto-Indo-European dʰewh₂-Every word from Proto-Celtic dūnomEvery word from English -ing