unstable

1. a. Not stable; not firm, fixed, or constant; subject to change or overthrow. Source: opted

2. adj. lacking stability or fixity or firmness Source: wordnet

3. adj. highly or violently reactive Source: wordnet

4. adj. affording no ease or reassurance Source: wordnet

5. adj. suffering from severe mental illness Source: wordnet

6. adj. disposed to psychological variability Source: wordnet

7. adj. subject to change; variable Source: wordnet

8. Not stable; not firm, fixed, or constant; subject to change or overthrow. -- Un*sta"ble*ness, n. Chaucer. Unstable equilibrium. See Stable equilibrium, under Stable. Source: webster

9. Not stable; not firm, fixed, or constant; subject to change oroverthrow.-- Un*sta"ble*ness, n. Chaucer. Unstable equilibrium. See Stableequilibrium, under Stable. Source: adambom

10. j:100 a. lacking stability or fixity or firmness s. highly or violently reactive s. disposed to psychological variability Source: ecdict

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