Etymologically
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watchdog

This is the current revision of this entry, as edited by bogdan on 1 November 2026 at 04:36. This address is a permanent link to this version.
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Pronunciation

  • UK: /ˈwɒt͡ʃˌdɒɡ/[1]
  • US: /ˈwɑːt͡ʃˌdɑːɡ/[1]

Etymology

It is formed from English watch + dog,[2][3][4][5][6] the OED and the Shorter Oxford taking the first element as the noun, Etymonline as the verb.[2][4][3] The first element goes back to Old English wæcce (“a watching, wakefulness”), from wæccan (“to keep watch, be awake”);[3] the second goes back to docga, a late and rare word whose origin is unknown.[3] Etymonline notes that an older name for a guard dog, recorded from the late 12th century, was apparently formed with ærn (“house”) (compare barn).[3]

Earliest recorded meaning

A dog kept to guard a house or property and warn of intruders: 1600, in R. Surflet's translation of C. Estienne and J. Liébault.[2] Etymonline dates it to about 1600, Dictionary.com to 1600–10 and Merriam-Webster to 1612.[3][6][5]

Semantic evolution

The figurative sense, a person who acts as a guardian, is recorded from 1660 in the OED and by 1845 in Etymonline.[2][3] From 1896 it was used of a person or body appointed to monitor companies, agencies or public bodies and often to regulate them;[2][7] this is now its usual sense with a modifying word, and the attributive use (a watchdog committee) followed in 1916.[2][7] The verb first meant to set a watchdog at a gate (1878, now obsolete), then to guard or keep under surveillance (1892);[2] Merriam-Webster dates the verb to 1902.[5]

Timeline

  • 1600 – a dog kept to guard a house or property.[2] Merriam-Webster dates this sense to 1612.[5]
  • 1660 – figurative, a person acting as a guardian.[2] Etymonline dates this sense to 1845.[3]
  • 1852 – attributive, of or like a watchdog.[2]
  • 1878 – verb, to place a watchdog at a gate (obsolete).[2]
  • 1892 – verb, to guard or keep under surveillance.[2] Merriam-Webster dates the verb to 1902.[5]
  • 1896 – a person or body appointed to monitor companies or agencies.[2]
  • 1916 – attributive, designating such a body.[2]

Meanings

Noun

  1. A dog kept to guard a house or property against intruders.[7][5][2]
  2. A person or organization that monitors companies, governments or public bodies to guard against waste, fraud or illegal practices: a consumer watchdog.[7][5][2]
  3. Used before a noun: acting as such a guardian: a watchdog agency.[7][2]

Verb

  1. To act as a watchdog over; to keep under surveillance or monitor.[5][2]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  3. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ a b c d e f g h Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  7. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins