UNSTABLE

1. [s] subject to change; variable; "a fluid situation fraught with uncertainty"; "everything was unstable following the coup"

2. [s] affording no ease or reassurance; "a precarious truce"

3. [s] highly or violently reactive; "sensitive and highly unstable compounds"

4. [s] disposed to psychological variability; "his rather unstable religious convictions"

5. [s] suffering from severe mental illness; "of unsound mind"

6. [a] lacking stability or fixity or firmness; "unstable political conditions"; "the tower proved to be unstable in the high wind"; "an unstable world economy"

similar words

1. [a] changeable

2. [a] changeful

3. [a] uneasy

4. [a] reactive

5. [a] irresolute

6. [a] insane

7. [s] coseismic

8. [s] coseismal

9. [s] crank

10. [s] cranky

11. [s] tender

12. [s] tippy

13. [s] disturbed

14. [s] unsettled

15. [s] explosive

16. [s] volatile

17. [s] labile

18. [s] rickety

19. [s] shaky

20. [s] wobbly

21. [s] wonky

22. [s] rocky

23. [s] seismic

24. [s] seismal

25. [s] thermolabile

26. [s] top-heavy

27. [s] tottering

28. [s] volcanic

opposite words

1. [a] stable