We found 24 dictionaries that define the word silliness:

General (20 matching dictionaries)

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

Business (1 matching dictionary)

19. silliness: Legal dictionary

Computing (1 matching dictionary)

20. silliness: Encyclopedia

Miscellaneous (1 matching dictionary)

21. silliness: Idioms

Slang (1 matching dictionary)

22. silliness: Urban Dictionary

(Note: See silly as well.)

Definitions from Wiktionary (silliness) ▸ noun:  (uncountable) That which is perceived as silly or frivolous. ▸ noun:  (countable) An act that is silly; a result of being silly. Similar: fatuity, fatuousness, giddiness, absurdity, sillyness, frivolosity, frivolousness, frivolousity, frivolity, daffiness, more... Opposite: seriousness, gravity, solemnity Types: foolishness, nonsense, lunacy, madness, stupidity, idiotcy, imbecility, doltishness, more... Adjectives: such, own, sheer, mere, pure, much, utter, plain, extreme, general, childish ▸ Words similar to silliness ▸ Usage examples for silliness ▸ Idioms related to silliness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing silliness ▸ Words that often appear near silliness ▸ Rhymes of silliness ▸ Invented words related to silliness