Dangerously insecure or unstable; perilous.
Relating to incipient caries.
Depending on the intention of another.
Unpredictable.
Readily decomposable.
Not stable.
Radioactive, especially with a short half-life.
Fickle.
Having a strong tendency to change.
Fluctuating; not constant.
To release (an animal) from a stable.