We found 19 dictionaries that define the word solitariness:

General (15 matching dictionaries)

1. solitariness: Merriam-Webster
2. solitariness: Oxford Learner's Dictionaries
3. solitariness: Collins English Dictionary
4. solitariness: Vocabulary.com
5. solitariness: Wordnik
6. solitariness: Wiktionary
7. solitariness: Dictionary.com
8. Solitariness: Online Plain Text English Dictionary
9. solitariness: Webster's Revised Unabridged, 1913 Edition
10. solitariness: Rhymezone
11. Solitariness: AllWords.com Multi-Lingual Dictionary
12. solitariness: Webster's 1828 Dictionary
13. solitariness: FreeDictionary.org
14. solitariness: Mnemonic Dictionary
15. solitariness: TheFreeDictionary.com

Business (1 matching dictionary)

16. solitariness: Legal dictionary

Computing (1 matching dictionary)

17. solitariness: Encyclopedia

Medicine (2 matching dictionaries)

18. solitariness: Merriam-Webster Medical Dictionary
19. solitariness: Medical dictionary

(Note: See solitary as well.)

Definitions from Wiktionary (solitariness) ▸ noun:  The state or quality of being solitary. Similar: loneliness, solitariousness, solitariety, oneliness, singularness, soleness, singleness, isolatedness, secludedness, sonliness, more... Opposite: companionship, sociability, togetherness, camaraderie ▸ Words similar to solitariness ▸ Usage examples for solitariness ▸ Idioms related to solitariness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing solitariness ▸ Words that often appear near solitariness ▸ Rhymes of solitariness ▸ Invented words related to solitariness