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: Yes, 85 percent of the art you see isn't any good. But everyone has a different opinion about which 85 percent is bad. That in turn creates fantastically unstable interplay and argument.
Unsteady
Part of speech: verb
Definition: To render unsteady, removing balance.
Part of speech: adjective
Definition: Not held firmly in position.Noted for lack of regularity or uniformity.Inconstant in purpose, or volatile in behaviour.