What does swiftness mean?
Swiftness is a noun meaning the quality or degree of being fast. It describes how quickly a person, animal, vehicle, or process moves, as well as how rapidly thoughts, decisions, or responses occur. The word is often somewhat literary or formal and can suggest not merely speed but energy, precision, and efficiency. For example, someone might praise the swiftness of a rescue operation, the swiftness of an athlete, or the swiftness of a leader in making a difficult decision. In ordinary speech, speed is often more common and direct, while swiftness adds a more expressive and refined tone. The word can also carry a positive connotation of competence and decisiveness, although it may sound critical when describing an unexpectedly rapid action. Swiftness is related to the adjective swift and the adverb swiftly, and its clearest uses involve movement, action, or mental response.
nounSwiftness is the quality of moving or happening quickly. It can also refer to rapidity of thought, response, or action.
- The quality of moving with great speed
- The speed with which an action, thought, or response occurs
"The swiftness of the runner carried her across the field before the others could react."
"The swiftness of the rescue team reached the injured climber before nightfall."
"Her swiftness in identifying the error impressed the entire research team."
The plural is uncommon because swiftness is normally used as an uncountable noun.
"The novel explores the different swiftnesses of flight, thought, and speech."
From Old English swift to modern swiftness, this word has always prized one quality: moving fast.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does swiftness come from?
Swiftness was formed in English by adding the suffix -ness to swift, a process that creates a noun naming a quality or state. The adjective swift comes from Old English swift and is inherited from Germanic vocabulary. The related forms swiftly and swifter developed from the same English root, while swiftness emphasizes the abstract quality of speed.
Related word forms
How swiftness is actually used
Swiftness is formal and often literary. It can describe physical speed, but it also commonly applies to rapid thought, decision-making, or response.
Easily confused with swiftness
Swiftness names the quality of being fast, whereas swift is an adjective describing something that moves or acts quickly.