We found 18 dictionaries that define the word voluntariness:

General (13 matching dictionaries)

1. voluntariness: Merriam-Webster
2. voluntariness: Oxford Learner's Dictionaries
3. voluntariness: Collins English Dictionary
4. Voluntariness, voluntariness: Wordnik
5. voluntariness: Wiktionary
6. voluntariness: Dictionary.com
7. Voluntariness: Wikipedia, the Free Encyclopedia
8. Voluntariness: Online Plain Text English Dictionary
9. voluntariness: Webster's Revised Unabridged, 1913 Edition
10. Voluntariness: AllWords.com Multi-Lingual Dictionary
11. voluntariness: Webster's 1828 Dictionary
12. voluntariness: FreeDictionary.org
13. Voluntariness: TheFreeDictionary.com

Business (2 matching dictionaries)

14. voluntariness: Merriam-Webster Legal Dictionary
15. voluntariness: Legal dictionary

Computing (1 matching dictionary)

16. voluntariness: Encyclopedia

Medicine (2 matching dictionaries)

17. voluntariness: Merriam-Webster Medical Dictionary
18. voluntariness: Medical dictionary

(Note: See voluntary as well.)

Definitions from Wiktionary (voluntariness) ▸ noun:  The condition of being voluntary. Similar: voluntarity, involuntariness, volitionality, willedness, uncommandedness, volunteerism, volitivity, self-willedness, unwilfulness, willingness, more... Opposite: involuntariness, compulsion, coercion, obligation Types: free will, autonomy, libertarianism, indeterminism, more... Adjectives: non, perfect, complete, mere, indirect, such, full, true, diminished, very, compassionate ▸ Words similar to voluntariness ▸ Usage examples for voluntariness ▸ Idioms related to voluntariness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing voluntariness ▸ Words that often appear near voluntariness ▸ Rhymes of voluntariness ▸ Invented words related to voluntariness