English adjective: unstable | |||
1. | unstable lacking stability or fixity or firmness | ||
Samples | Unstable political conditions. The tower proved to be unstable in the high wind. An unstable world economy. | ||
Similar | coseismal, coseismic, crank, cranky, explosive, rickety, rocky, seismal, seismic, shaky, tender, tippy, tipsy, top-heavy, tottering, volatile, volcanic, wobbly, wonky | ||
See also | impermanent, inconstant, temporary, unsteady | ||
Antonyms | stable | ||
2. | unstable highly or violently reactive | ||
Samples | Sensitive and highly unstable compounds. | ||
Similar | reactive | ||
Antonyms | unreactive | ||
3. | unstable affording no ease or reassurance | ||
Samples | A precarious truce. | ||
Synonyms | precarious | ||
Similar | uneasy | ||
Antonyms | easy | ||
4. | unstable suffering from severe mental illness | ||
Samples | Of unsound mind. | ||
Synonyms | mentally ill, unsound | ||
Similar | insane | ||
Antonyms | sane | ||
5. | unstable disposed to psychological variability | ||
Samples | His rather unstable religious convictions. | ||
Similar | irresolute | ||
Antonyms | resolute | ||
6. | unstable subject to change; variable | ||
Samples | A fluid situation fraught with uncertainty. Everything was unstable following the coup. | ||
Synonyms | fluid | ||
Similar | changeable, changeful | ||
Antonyms | unchangeable | ||