Where does “spy” come from?

Spy comes from Middle English spien and espien, from Old French espier, from Frankish spehōn, ultimately from Proto-Indo-European speḱ-, meaning to observe or look.

spy (English): A person who secretly watches and examines the...

Definitions

  1. A person who secretly watches and examines the...

Ancestry of “spy”, step by step

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

Words derived from “spy

Every word from Proto-Indo-European dʰewh₂-
spy — Etymology, Origin & Word History | Etymology Explorer