Adjective
1. subject to change; variable;
"a fluid situation fraught with uncertainty""everything was unstable following the coup"2. characteristic of a fluid; capable of flowing and easily changing shape
3. smooth and unconstrained in movement;
"a long, smooth stride""the fluid motion of a cat""the liquid grace of a ballerina""liquid prose"4. in cash or easily convertible to cash;
"liquid (or fluid) assets"5. affording change (especially in social status);
"Britain is not a truly fluid society""upwardly mobile"