1. [ noun ] a substance that is fluid at room temperature and pressure
Related terms: substance liquid coolant filtrate
2. [ noun ] a continuous amorphous substance that tends to flow and to conform to the outline of its container: a liquid or a gas
Related terms: substance gas liquid ichor
3. [ adjective ] subject to change; variable
Synonyms: unstable

"a fluid situation fraught with uncertainty" "everything was unstable following the coup

Related terms: changeable
4. [ adjective ] in cash or easily convertible to cash
Synonyms: liquid

"liquid (or fluid) assets"

Related terms: disposable
5. [ adjective ] smooth and unconstrained in movement
Synonyms: flowing smooth liquid fluent

"a long, smooth stride" "the fluid motion of a cat" "the liquid grace of a ballerina" "liquid prose"

Related terms: graceful
6. [ adjective ] characteristic of a fluid; capable of flowing and easily changing shape
Synonyms: runny
Related terms: liquid
7. [ adjective ] affording change (especially in social status)
Synonyms: mobile

"Britain is not a truly fluid society" "upwardly mobile"

Related terms: changeable
Similar spelling:   flit