We found 18 dictionaries that define the word ruthlessness:

General (15 matching dictionaries)

1. ruthlessness: Merriam-Webster
2. ruthlessness: Oxford Learner's Dictionaries
3. ruthlessness: Collins English Dictionary
4. ruthlessness: Vocabulary.com
5. Ruthlessness, ruthlessness: Wordnik
6. ruthlessness: Cambridge Advanced Learner's Dictionary
7. ruthlessness: Wiktionary
8. ruthlessness: Dictionary.com
9. ruthlessness: Rhymezone
10. ruthlessness: Webster's 1828 Dictionary
11. ruthlessness: FreeDictionary.org
12. ruthlessness: Mnemonic Dictionary
13. ruthlessness: TheFreeDictionary.com

Business (1 matching dictionary)

14. ruthlessness: Legal dictionary

Computing (1 matching dictionary)

15. Ruthlessness: Encyclopedia

Miscellaneous (1 matching dictionary)

16. Encyclopedia of Graphic Symbols (No longer online)

(Note: See ruthless as well.)

Definitions from Wiktionary (ruthlessness) ▸ noun:  The property of being ruthless. Similar: cruelty, pitilessness, mercilessness, rudeness, rigorousness, ruthfulness, brutalness, brutality, relentlessness, rawness, more... Opposite: compassion, mercy, sympathy, pity, leniency Types: callous, cruel, sadistic, inhumane, barbaric, brutal, bloodthirsty, more... Phrases: freedom through ruthlessness, satisfaction through ruthlessness, his ruthlessness returns, more... Adjectives: utter, certain, such, same, complete, cold, greater, utmost, political, german, equal ▸ Words similar to ruthlessness ▸ Usage examples for ruthlessness ▸ Idioms related to ruthlessness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ruthlessness ▸ Words that often appear near ruthlessness ▸ Rhymes of ruthlessness ▸ Invented words related to ruthlessness