Unstable meaning

What does “unstable” mean? Definitions, examples, synonyms and opposites.

“unstable” is an adjective with 6 meanings. Its most common meaning is: lacking stability or fixity or firmness.

unstable

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

Source: WordNet 3.1, Princeton University