Unstable
Part of speech: adjective
Definition: Having a strong tendency to change Fluctuating; not constant fickle unpredictable Readily decompasable Radioactive, especially with a short half-life
Example sentence: Your emotions are very unstable and should never be the foundation for direction in your life.
Fluid
Part of speech: noun
Definition: Any state of matter which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma
Part of speech: adjective
Definition: Of, or relating to fluid.In a state of flux; subject to change.Moving smoothly, or giving the impression of a liquid in motion.Convertible into cash.
Example sentence: I've learned it's important to never lock yourself down into one thing - you need to remain fluid and open to all possibilities.