Where does “watchdog” come from?

Watchdog derives from English watch and Middle English dogge, from Old English docga, ultimately from Proto-Germanic wakjaną and Proto-Indo-European weǵ-, meaning to be lively or awake.

watchdog (English): a guard dog; An individual or group that monitors...

Definitions

  1. a guard dog; An individual or group that monitors...

Ancestry of “watchdog”, step by step

watchdog traces back through two separate lines of ancestry.

via English dog

StepLanguageWordMeaning
1EnglishdogA mammal, "Canis familiaris" or "Canis lupus...
2EnglishdogshitDog excrement; Something disgusting, abominable,...
3EnglishshitSolid excretory product evacuated from the...
4Middle Dutchschite
5Old Dutchskīta
6Old Saxonskiti
7Proto-Germanicskītaz
8Proto-Indo-Europeansḱeyd-to shade; to cut off; to part with, separate, cut...
9Proto-Indo-Europeansḱēy-to shine; to shimmer; shadow; luster, gloss,...
10Proto-Germanicskaidąseparation, distinction
11Proto-Indo-EuropeanskÁit-to cut, part, spearate, divide; to cut, part,...

via English watch

StepLanguageWordMeaning
1EnglishwatchA portable or wearable timepiece; The act of...
2EnglishpuppyA young dog, especially before sexual maturity; A...
3EnglishpuppieObsolete form of puppy
4Middle Frenchpoupéedoll, toy
5Old Frenchpoupée
6Latinpupagirl, little girl; doll, puppet; pupa
7Latinpupusa boy, a child; a puppet; the pupil of the eye
8Proto-Indo-Europeanpeh₂w-few, little; smallness
Every word from Proto-Indo-European skÁit-