unstable

About 8.60 uses per million words.

Meaning

1. adjective Not stable.

   unstable foundation

2. adjective Having a strong tendency to change.
3. adjective Fluctuating; not constant.

   politically unstable

4. adjective Fickle.
5. adjective Unpredictable.
6. adjective Readily decomposable.

   chemically unstable

7. adjective Radioactive, especially with a short half-life.
8. verb To release (an animal) from a stable.

Similar words

labile irresolute wonky cranky uneasy crank unsound precarious unsettled top-heavy

Often followed by

and angina in equilibrium or as to at state

Word family

unstableness unstablenesses unstably