fluid
//ˈfluːɪd//
Noun
fluidsPlural
1
A substance that flows freely and has no fixed shape, such as a liquid or gas
Water and air are both fluids.
2
A liquid substance in the body, such as blood or saliva
The doctor took a sample of the fluid from my knee.
Synonym
Adjective
1
Able to flow easily; not solid or rigid
The paint should be fluid enough to spread smoothly.
2
Smooth and graceful in movement or style
The dancer's fluid movements captivated the audience.
3
Able to change easily; not fixed or stable
The political situation remains fluid and could change at any moment.