We found 24 dictionaries that define the word dog eat dog:

General (17 matching dictionaries)

1. dog-eat-dog: Merriam-Webster
2. dog eat dog: Oxford Learner's Dictionaries
3. dog-eat-dog: American Heritage Dictionary of the English Language
4. dog eat dog: Collins English Dictionary
5. dog-eat-dog: Cambridge Advanced Learner's Dictionary
6. dog-eat-dog, dog eat dog: Wiktionary
7. dog-eat-dog: Webster's New World College Dictionary, 4th Ed.
8. dog-eat-dog: Infoplease Dictionary
9. dog-eat-dog, dog eat dog: Dictionary.com
10. dog-eat-dog: Cambridge Essential American English Dictionary
11. Dog Eat Dog (Adam and the Ants song), Dog Eat Dog (American game show), Dog Eat Dog (Joni Mitchell album), Dog Eat Dog (TV show), Dog Eat Dog (U.S. game show), Dog Eat Dog (US game show), Dog Eat Dog (Warrant album), Dog Eat Dog (band), Dog Eat Dog (game show), Dog eat dog: Wikipedia, the Free Encyclopedia
12. Dog-Eat-Dog: A to Z list of the most popular idioms
13. Dog Eat Dog: The Word Detective
14. dog-eat-dog: TheFreeDictionary.com
15. dog eat dog: Longman Dictionary of Contemporary English

Business (3 matching dictionaries)

16. Dog Eat Dog: Investopedia
17. dog-eat-dog: Legal dictionary
18. dog-eat-dog: Financial dictionary

Computing (1 matching dictionary)

19. dog-eat-dog: Encyclopedia

Medicine (1 matching dictionary)

20. dog-eat-dog: Medical dictionary

Miscellaneous (1 matching dictionary)

21. dog-eat-dog, dog eat dog: Idioms

Slang (1 matching dictionary)

22. dog eat dog: Urban Dictionary

Definitions from Wiktionary (dog eat dog) ▸ adjective:  Ruthlessly acquisitive or competitive. Describes a business or other set of circumstances where people try to succeed at the expense of other people. Similar: bare-knuckled, predatory, rapacious, grasping, overcompetitive, exploitive, exploitative, money-hungry, greedy, overgreedy, more... Opposite: cooperation, collaboration, teamwork, mutualism Phrases: dog eat dog world, more... ▸ Words similar to dog eat dog ▸ Usage examples for dog eat dog ▸ Idioms related to dog eat dog ▸ Wikipedia articles (New!) ▸ Popular nouns described by dog eat dog ▸ Words that often appear near dog eat dog ▸ Rhymes of dog eat dog ▸ Invented words related to dog eat dog