Synonyms and Antonyms for unstable

1. unstable (adj.)

lacking stability or fixity or firmness

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2. unstable (adj.)

affording no ease or reassurance

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3. unstable (adj.)

highly or violently reactive

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4. unstable (adj.)

suffering from severe mental illness

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5. unstable (adj.)

disposed to psychological variability

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6. unstable (adj.)

subject to change; variable

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