fluidity

noun

flu·​id·​i·​ty flü-ˈi-də-tē 

1

: the quality or state of being fluid

2

: the physical property of a substance that enables it to flow

Examples of fluidity in a Sentence

Recent Examples on the Web

The direct-address simplicity of the production serves the fluidity of Page’s performance. —Theater Critic, Los Angeles Times, 17 Jan. 2026

There is also the fluidity of language, fragments and run-on sentences organized to generate rhythm. —Literary Hub, 16 Jan. 2026

The sort of midfield fluidity brought by summer signings Zubimendi and Eberechi Eze is something Arsenal are keen on, as Arteta explained when asked about the interchanges between Zubimendi and Rice after the 3-0 win against Spain’s Athletic Club in pre-season. —Ahmed Walid, New York Times, 13 Jan. 2026

That felt so graceful a way to put it, and a testament to the fluidity of all us in this world. —Walden Green, Pitchfork, 12 Jan. 2026

Word History

First Known Use

1603, in the meaning defined at sense 1

Rhymes for fluidity

• acidity
• aridity
• avidity
• cupidity
• humidity
• liquidity
• lucidity
• morbidity
• placidity
• rancidity
• rapidity
• rigidity

Kids Definition

fluidity

noun

flu·​id·​i·​ty flü-ˈid-ət-ē 

: the quality or state of being fluid

Medical Definition

fluidity

noun

flu·​id·​i·​ty flü-ˈid-ət-ē 

plural fluidities

1

: the quality or state of being fluid

2

a

: the physical property of a substance that enables it to flow

b

: the reciprocal of viscosity