What does unstable mean?

Definitions for unstableʌnˈsteɪ bəl

Here are all the possible meanings and translations of the word unstable.

Princeton's WordNet

  1. unstable(adj)

    lacking stability or fixity or firmness

    "unstable political conditions"; "the tower proved to be unstable in the high wind"; "an unstable world economy"

  2. unstable(adj)

    highly or violently reactive

    "sensitive and highly unstable compounds"

  3. precarious, unstable(adj)

    affording no ease or reassurance

    "a precarious truce"

  4. mentally ill, unsound, unstable(adj)

    suffering from severe mental illness

    "of unsound mind"

  5. unstable(adj)

    disposed to psychological variability

    "his rather unstable religious convictions"

  6. fluid, unstable(adj)

    subject to change; variable

    "a fluid situation fraught with uncertainty"; "everything was unstable following the coup"


  1. unstable(Adjective)

    having a strong tendency to change

  2. unstable(Adjective)

    fluctuating; not constant

  3. unstable(Adjective)


  4. unstable(Adjective)


  5. unstable(Adjective)

    Readily decompasable

  6. unstable(Adjective)

    Radioactive, especially with a short half-life

Webster Dictionary

  1. Unstable(adj)

    not stable; not firm, fixed, or constant; subject to change or overthrow


  1. Unstable

    Unstable is Adema's second and also final album to feature its original lineup with Chavez and Ransom departing from the band after its release and then again after their reunion. It was released on August 12, 2003. It has sold about 400,000 copies worldwide. Its radio single was the self-titled song "Unstable", which also had a music video, but it didn't get very much radio play. Many songs relied more on instrumentation and harmony instead of distortion in comparison to their previous album, but the album also has some of the band's most aggressive work. It was less successful than their first album, debuting at number 43 on the Billboard 200 before quickly falling off the chart.

Chambers 20th Century Dictionary

  1. Unstable

    un-stā′bl, adj. not stable, unreliable, infirm, inconstant: in such a physical state that the slightest change induces further change of form or composition.—ns. Unstabil′ity, Unstā′bleness.


  1. Chaldean Numerology

    The numerical value of unstable in Chaldean Numerology is: 2

  2. Pythagorean Numerology

    The numerical value of unstable in Pythagorean Numerology is: 4

Sample Sentences & Example Usage

  1. Jerry Kiffer:

    We consider the aircraft unstable.

  2. Hikaru Sato:

    We expect a few more days of unstable markets.

  3. The Belgian official:

    TATP is very unstable and would explode otherwise.

  4. Manual Braga da Cruz:

    But the situation is fluid, unstable and could evolve.

  5. Janusz Korczak:

    Whatever has been achieved through pressure and violence is unstable, unreliable and incorrect.

Images & Illustrations of unstable

  1. unstableunstableunstable

Translations for unstable

From our Multilingual Translation Dictionary

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