dog

1 of 4

noun

plural dogs
Synonyms of dognext
1
a
: a carnivorous mammal (Canis familiaris) closely related to the gray wolf that has long been domesticated as a pet, occurs in a variety of sizes, colors, and coat types, and is sometimes trained to perform special tasks (such as herding, guarding, or acting as a service animal)
After 31 years of Labrador retrievers holding the title, the American Kennel Club says French bulldogs were the most popular dog in America last year.Scott Simon
b
: any of a family (Canidae) of carnivorous mammals that includes the wolves, jackals, foxes, coyotes, and the domestic dog : canid
c
: a male dog compare bitch entry 1 sense 1
2
informal
a
: a worthless or contemptible person
"Dog of an unbeliever," said an old man …Sir Walter Scott
b
: fellow, chap
you lucky dog
3
: any of various usually simple mechanical devices (such as an andiron or a detent) for holding, gripping, or fastening that consist of a spike, bar, or hook
4
: uncharacteristic or affected stylishness or dignity see also put on the dog
5
Dog astronomy : either of the constellations Canis Major or Canis Minor
6
dogs plural, slang : feet
rest his tired dogs
7
the dogs plural, informal : ruin
It's enough to drive anyone to the dogs.
see also go to the dogs
8
informal : an inferior one of its kind
The movie was a dog.
The stock is a dog. Earnings have been poor …Douglas A. McIntyre
Logic should dictate that a hefty sedan powered by a small four-cylinder motor should be a real dog of a thing to drive.Keith Didham
9
slang, often disparaging + offensive : an unattractive person
especially : an unattractive girl or woman
10
informal : hot dog sense 1
bought two dogs and a beer
doglike adjective
a doglike animal
doglike behaviors

Illustration of dog

Illustration of dog
  • 1 pastern
  • 2 chest
  • 3 flews
  • 4 muzzle
  • 5 stop
  • 6 occiput
  • 7 leather
  • 8 crest
  • 9 withers
  • 10 loin
  • 11 point of rump
  • 12 hock or tarsus
  • 13 knee or stifle
  • 14 brisket
  • 15 elbow
  • 16 feathering

dog

2 of 4

adjective

1
: canine
dog breeders
a dog collar
2
: having an inferior or inauthentic quality : spurious
dog rhyme
especially, languages : unlike that used by native speakers or writers
dog Latin
dog French

dog

3 of 4

verb

dogged ˈdȯgd How to pronounce dog (audio)
ˈdägd
; dogging; dogs

transitive verb

1
a
: to hunt, track, or follow (someone) like a hound
dogged her every move
b
: to be a persistent source of difficulty or distress to (someone) : plague
Rumors dogged him throughout his public life.Howard Chua-Eoan
often used in the passive with by
Their star pitcher has been dogged by injuries.
The project has been dogged by controversy.
c
: to bother or pester (someone) persistently : hound
Reporters dogged her for information.
2
: to fasten (something) with a dog (see dog entry 1 sense 3)
dogged down the hatch
see also:

dog

4 of 4

adverb

informal
: extremely, utterly
dog cheap
sometimes used in combination
In plain West Virginia-speak, the situation is dog-ugly.Mitch Vingle
see also dog-tired

Examples of dog in a Sentence

Noun That dog barks all day long. children playing with the family dog wild dogs such as the Australian dingo Her latest book turned out to be a real dog. That was a dog of a movie. Verb He dogged her every move. Creditors dogged him until he finally paid his bills.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Six months later, on Sunday, April 12, his remains were found by a person walking a dog on Caja del Rio Road in Santa Fe County, New Mexico State Police said in a statement. Paloma Chavez, PEOPLE, 18 Apr. 2026 Medical testing on dogs is legal in the United States, but it is heavily regulated under federal law. Brady Halbleib, CBS News, 18 Apr. 2026
Adjective
Meanwhile, critics in the anti-dog camp, some of whom seemed to object to the very concept of urban dogs, argued the poop proposals did not go nearly far enough. Rachel Sugar, Curbed, 8 Apr. 2026 In multi-dog households, each dog should have its own bed to prevent conflict. Maria Azzurra Volpe, MSNBC Newsweek, 1 Apr. 2026
Verb
Dogs must be at least three months old, and dogs older than 12 months must be spayed or neutered. Patrick Connolly, The Orlando Sentinel, 15 Apr. 2026 Inspired by UConn, other schools in the state, including Eastern Connecticut State University, Central Connecticut State University and the University of Saint Joseph, host dogs almost every week. Mikayla Bunnell, Hartford Courant, 11 Apr. 2026 See All Example Sentences for dog

Word History

Etymology

Noun

Middle English, from Old English docga

Adjective

from attributive use of dog entry 1

Verb

derivative of dog entry 1

Adverb

derivative of dog entry 1

First Known Use

Noun

before the 12th century, in the meaning defined at sense 1a

Adjective

14th century, in the meaning defined at sense 1

Verb

1519, in the meaning defined at sense 1a

Adverb

1526, in the meaning defined above

Time Traveler
The first known use of dog was before the 12th century

Browse Nearby Words

Cite this Entry

“Dog.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dog. Accessed 18 Apr. 2026.

Kids Definition

dog

1 of 2 noun
1
a
: a domestic mammal that eats meat and is closely related to the gray wolf
b
: any animal of the family to which the dog belongs
c
: a male dog
2
a
: a worthless person
b
: person sense 1
you lucky dog
3
a
: any of various devices for holding, gripping, or fastening that consist of a spike, rod, or bar
b
4
: a show of being stylish or rich
put on the dog
5
plural : feet
doglike adjective

dog

2 of 2 verb
dogged; dogging
: to hunt, track, or follow like a hound

Medical Definition

dog

noun
often attributive
: a highly variable carnivorous domesticated mammal of the genus Canis (C. familiaris) closely related to the common wolf (Canis lupus)
broadly : any member of the family Canidae

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