We found 30 dictionaries that define the word ruthless:

General (27 matching dictionaries)

1. ruthless: Longman Dictionary of Contemporary English
2. ruthless: Merriam-Webster
3. ruthless: Oxford Learner's Dictionaries
4. ruthless: American Heritage Dictionary of the English Language
5. ruthless: Collins English Dictionary
6. ruthless: Vocabulary.com
7. Ruthless, ruthless: Wordnik
8. ruthless: Cambridge Advanced Learner's Dictionary
9. ruthless: Wiktionary
10. ruthless: Webster's New World College Dictionary, 4th Ed.
11. ruthless: The Wordsmyth English Dictionary-Thesaurus
12. ruthless: Infoplease Dictionary
13. ruthless: Dictionary.com
14. ruthless: Online Etymology Dictionary
15. ruthless: Cambridge Essential American English Dictionary
16. Ruthless (Ace Hood album), Ruthless (TV series), Ruthless (film), Ruthless (horse), Ruthless, Ruthless, The Ruthless: Wikipedia, the Free Encyclopedia
17. Ruthless: Online Plain Text English Dictionary
18. ruthless: Webster's Revised Unabridged, 1913 Edition
19. ruthless: Rhymezone
20. Ruthless: AllWords.com Multi-Lingual Dictionary
21. ruthless: Webster's 1828 Dictionary
22. ruthless: FreeDictionary.org
23. ruthless: Mnemonic Dictionary
24. ruthless: TheFreeDictionary.com
25. Ruthless: World Wide Words

Business (1 matching dictionary)

26. ruthless: Legal dictionary

Computing (1 matching dictionary)

27. ruthless: Encyclopedia

Slang (1 matching dictionary)

28. Totally Unofficial Rap (No longer online)

(Note: See ruthlessly as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Without pity or compassion; cruel, pitiless. ▸ adjective:  Uncompromising; unrelenting. Similar: pitiless, unmerciful, merciless, remorseless, unpitying, unpitiful, hardened, lack-pity, cold, hardhearted, more... Opposite: merciful, compassionate, kind, tender Types: heartless, merciless, spiteful, vindictive, malicious, cruel, barbaric, brutal, more... Phrases: Ruthless People, Ruthless Records, The Ruthless, Ruthless Rap Assassins, Ruthless Records discography, more... Colors:     black,     red,     dark gray,     blood red,     charcoal, more... ▸ Word origin ▸ Words similar to ruthless ▸ Usage examples for ruthless ▸ Idioms related to ruthless ▸ Wikipedia articles (New!) ▸ Popular nouns described by ruthless ▸ Words that often appear near ruthless ▸ Rhymes of ruthless ▸ Invented words related to ruthless