We found 19 dictionaries that define the word ruiner:

General (15 matching dictionaries)

1. ruiner: Merriam-Webster
2. ruiner: Collins English Dictionary
3. ruiner: Vocabulary.com
4. Ruiner, ruiner: Wordnik
5. ruiner: Wiktionary
6. Ruiner, ruiner: Dictionary.com
7. Ruiner (album), Ruiner (band), Ruiner (video game), Ruiner, The Ruiner (album), The Ruiner: Wikipedia, the Free Encyclopedia
8. Ruiner: Online Plain Text English Dictionary
9. ruiner: Webster's Revised Unabridged, 1913 Edition
10. ruiner: Rhymezone
11. Ruiner, ruiner: AllWords.com Multi-Lingual Dictionary
12. ruiner: Webster's 1828 Dictionary
13. ruiner: FreeDictionary.org
14. ruiner: Mnemonic Dictionary
15. Ruiner: TheFreeDictionary.com

Business (1 matching dictionary)

16. ruiner: Legal dictionary

Computing (1 matching dictionary)

17. ruiner: Encyclopedia

Miscellaneous (1 matching dictionary)

18. ruiner: Idioms

Slang (1 matching dictionary)

19. Ruiner, The Ruiner: Urban Dictionary

(Note: See ruiners as well.)

Definitions from Wiktionary (ruiner) ▸ noun:  Someone who ruins. Similar: destroyer, ruinator, ravager, destructor, wreaker, deteriorator, disrupter, underminer, demolisher, vandal, more... Opposite: savior, preserver, protector, benefactor ▸ Words similar to ruiner ▸ Usage examples for ruiner ▸ Idioms related to ruiner ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ruiner ▸ Words that often appear near ruiner ▸ Rhymes of ruiner ▸ Invented words related to ruiner