We found 23 dictionaries that define the word simpleness:

General (16 matching dictionaries)

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

Business (3 matching dictionaries)

17. simpleness: Merriam-Webster Legal Dictionary
18. simpleness: Legal dictionary
19. simpleness: Financial dictionary

Computing (1 matching dictionary)

20. simpleness: Encyclopedia

Medicine (2 matching dictionaries)

21. simpleness: Merriam-Webster Medical Dictionary
22. simpleness: Medical dictionary

Miscellaneous (1 matching dictionary)

23. simpleness: Idioms

(Note: See simple as well.)

Definitions from Wiktionary (simpleness) ▸ noun:  The property of being simple. Similar: simplicity, simplisticness, simplity, simple-mindedness, uncomplicatedness, simplemindedness, simple-heartedness, succinctness, conciseness, implicity, more... Adjectives: hygienic, inexplicable, very, such, sweet, rude, great, native, unadorned, divine, childlike ▸ Words similar to simpleness ▸ Usage examples for simpleness ▸ Idioms related to simpleness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing simpleness ▸ Words that often appear near simpleness ▸ Rhymes of simpleness ▸ Invented words related to simpleness