Etymology

spy

S1P3Y4

Today it means: A person who secretly watches and examines the actions of other individuals or organizations and gathers information on them (usually to gain an advantage). Full definition →

Middle English spien ← Old French espier ← Frankish *spehōn
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The story

  1. Proto-Indo-European · derived from*speḱ-“to look”
  2. Proto-Germanic · derived from*spehōną“to see, look”
  3. Frankish · derived from*spehōn“to spy”
  4. Old French · derived fromespier“to spy”
  5. Middle English · inherited fromspien
  6. English todayspy

From Middle English spien, aphetic variant of earlier espien (“to espy”), from Old French espier (“to spy”), from Frankish *spehōn (“to spy”), from Proto-Germanic *spehōną (“to see, look”), from Proto-Indo-European *speḱ- (“to look”). Akin to German spähen (“to spy”), Dutch spieden (“to spy”). The noun displaced native Old English sċēawere (literally “watcher”), which was also the word for "mirror." In this sense, the verb displaced Old English sċēawian, which was also the word for "to watch" and became the Modern English word show. Distant cognate vie PIE with Latin speculātor, Ancient Greek κατάσκοπος (katáskopos). Compare typologically Russian согляда́тай (sogljadátaj) (akin to гляде́ть (gljadétʹ)).

Words from the same roots

Old Frenchespier all →

Frankish*spehōn all →

espionageespy

Proto-Germanic*spehōną all →

espionageespy

Proto-Indo-European*speḱ- all →

scopeespy

Etymology from Wiktionary, CC BY-SA 4.0.