We found 25 dictionaries that define the word restlessness:

General (18 matching dictionaries)

1. restlessness: Merriam-Webster
2. restlessness: Oxford Learner's Dictionaries
3. restlessness: Collins English Dictionary
4. restlessness: Vocabulary.com
5. Restlessness, restlessness: Wordnik
6. restlessness: Cambridge Advanced Learner's Dictionary
7. restlessness: Wiktionary
8. restlessness: Dictionary.com
9. restlessness: Cambridge Essential American English Dictionary
10. Restlessness: Wikipedia, the Free Encyclopedia
11. restlessness: Rhymezone
12. restlessness: Webster's 1828 Dictionary
13. restlessness: FreeDictionary.org
14. restlessness: Mnemonic Dictionary
15. restlessness: TheFreeDictionary.com
16. restlessness: Wikimedia Commons US English Pronunciations

Business (1 matching dictionary)

17. restlessness: Legal dictionary

Medicine (5 matching dictionaries)

18. restlessness: Merriam-Webster Medical Dictionary
19. Dorland's Illustrated Medical Dictionary (No longer online)
20. Sleep Terms (No longer online)
21. restlessness: Medical dictionary
22. University of Maryland Glossary of Medical Terms (No longer online)

Slang (1 matching dictionary)

23. Restlessness: Urban Dictionary

(Note: See restless as well.)

Definitions from Wiktionary (restlessness) ▸ noun:  The state or condition of being restless; an inability to be still, quiet, at peace or comfortable. Similar: uneasiness, impatience, fidgetiness, fidget, unrestfulness, restiveness, unquietness, inquietude, restfulness, restiffness, more... Opposite: calm, quiet, serenity, peace Types: anxiety, insomnia, hyperactivity, agitation, impatience, more... Phrases: migratory restlessness, feeling of restlessness, shook with restlessness, restlessness or shortness of temper, opposite of restlessness, more... Adjectives: great, extreme, general, certain, nervous, inner, mental, feverish, much, constant, physical Colors:     red,     orange,     bright yellow,     neon green,     electric blue, more... ▸ Words similar to restlessness ▸ Usage examples for restlessness ▸ Idioms related to restlessness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing restlessness ▸ Words that often appear near restlessness ▸ Rhymes of restlessness ▸ Invented words related to restlessness