Where does “spywork” come from?

spywork (English) comes from English spy, from English -ing, from Old English -ing, from Old English -tūn, from Old English tūn, from Proto-West Germanic tūn, from Proto-Germanic tūną, from Gaulish dunum — smoke; mist, haze.

spywork (English): The activities and duties relating to spies and spying

Definitions

  1. The activities and duties relating to spies and spying

Ancestry of “spywork”, step by step

spywork traces back through two separate lines of ancestry.

via English spy

StepLanguageWordMeaning
1EnglishspyA person who secretly watches and examines the...
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

via English work

StepLanguageWordMeaning
1Englishwork"Employment."; "Effort."; Sustained effort to...
2Middle Englishwerkwork
3Old Englishweorcwork, in various senses, including
4Proto-West Germanicwerkwork
5Proto-Germanicwerkąwork
6Proto-Indo-Europeanwérǵomwork
7Proto-Indo-Europeanwerǵ-to make
Every word from Proto-Indo-European dʰewh₂-Every word from Proto-Celtic dūnomEvery word from English -ing