Adjective
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subject to change
variable
"a fluid situation fraught with uncertainty"
"everything was unstable following the coup"
-
disposed to psychological variability
"his rather unstable religious convictions"
-
suffering from severe mental illness
"of unsound mind"
- mentally ill -
affording no ease or reassurance
"a precarious truce"
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highly or violently reactive
"sensitive and highly unstable compounds"
-
lacking stability or fixity or firmness
"unstable political conditions"
"the tower proved to be unstable in the high wind"
"an unstable world economy"