We found 23 dictionaries that define the word swiftness:

General (18 matching dictionaries)

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

Business (2 matching dictionaries)

17. swiftness: Legal dictionary
18. swiftness: Financial dictionary

Computing (1 matching dictionary)

19. Swiftness: Encyclopedia

Medicine (1 matching dictionary)

20. swiftness: Medical dictionary

Miscellaneous (1 matching dictionary)

21. swiftness: Idioms

Definitions from Wiktionary (swiftness) ▸ noun:  The state of being swift. Similar: speed, fastness, speediness, rapidity, speedfulness, fleetness, swift-handedness, quickness, swishness, agility, more... Opposite: slowness, lethargy, deliberateness, plodding, unhurriedness Types: velocity, acceleration, rapidity, celerity, speed, more... Phrases: with swiftness, more... Adjectives: incredible, great, such, amazing, surprising, extraordinary, astonishing, remarkable, equal, wonderful, terrible ▸ Words similar to swiftness ▸ Usage examples for swiftness ▸ Idioms related to swiftness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing swiftness ▸ Words that often appear near swiftness ▸ Rhymes of swiftness ▸ Invented words related to swiftness