Where does “deadly” come from?

Deadly comes from Old English dēadlīċ, a compound of dēad (dead) and the suffix -līċ (forming adjectives meaning "of the nature of" or "characterized by").

deadly (English): Subject to death; mortal; Causing death; lethal;...

Definitions

  1. Subject to death; mortal; Causing death; lethal;...

Ancestry of “deadly”, step by step

StepLanguageWordMeaning
1English-nessAppended to adjectives to form nouns meaning "the...
2Middle English-nesseAffixed to adjectives to form abstract nouns...
3Old English-nesUsed to form abstract nouns, usually from...
4Proto-West Germanic-nassīUsed to form abstract nouns, usually from...
5Proto-Germanic-inassuz-ness
6Proto-West Germanic-ness, -th
7Proto-Germanic-į̄-th
8Proto-Indo-European-íh₂
9Proto-Indo-European-h₂Creates collective nouns, which refer to groups...

Words derived from “deadly

Every word from Proto-Indo-European -h₂