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| un·sta·ble [ un stáyb'l ] |
adjective |
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| Definition: |
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1. not fixed: not firm, solid, or fixed
  unstable ground
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2. likely to fall or collapse: likely to fall, collapse, or sway
unstable scaffolding
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3. lacking emotional or psychological stability: lacking, or resulting from a lack of, emotional control or psychological stability
unstable behavior
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4. changeable: apt to change
unstable weather
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5. unsteady in purpose or intent: unsteady or unsure in purpose or intent
political support that is unstable
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6. physics having short half-life: having a brief existence or half-life
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7. physics subject to spontaneous change: describes a particle that is subject to spontaneous change such as radioactive decay
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| un·sta·ble·ness noun |
| un·sta·bly adverb |
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