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   unstable

   /ʌnˈsteɪbl/

   adjective

   • 1. likely to give way; not stable: "the unstable cliff tops" Similar unsteadyrockywobblywobblingricketyshakytotterytotteringteeteringdodderyunsafeunbalancedunreliableinsecurenot secureunfastenedunsecuredmovableprecariousbocketyOpposite stablesteady
   • ▪ likely to change or fail; not firmly established: "some students found themselves in unstable housing situations" Similar changeablevolatilevariableunsettledfluctuatinginconstantinconsistentirregularfitfulunpredictableunreliableficklecapriciousmercurialerraticuncertainwaveringinformal:peakyOpposite stablefirm
   • ▪ prone to psychiatric problems or sudden changes of mood: "he was mentally unstable" Similar unbalancedof unsound mindmentally illderangeddementedcrazeddistractedtroubleddisturbedunhingedinsanemadmad as a hattermad as a March hareraving madlunaticout of one's mind/headnot in one's right mindneuroticpsychoticnon compos mentissectionableinformal:crazyloopyloonymixed upnutsnuttynutty as a fruitcakebananascrackedcrackpotdippyscrewybatscuckoobonkersmentalscrewed upnot all thereoff one's headout to luncha bit lackinground the benddaftbarmycrackersbarkingbarking madbattydottypottyoff one's trolley/rockerdaft as a brushnot the full shillinground the twistaway with the fairiesnutsynutsosquirrellywackobuggydated:touchedOpposite stablebalanced

   Derivatives

   • 1. unstableness noun
   • 2. unstably adverb

   Scrabble Points: 10

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2. People also ask

   What is the meaning of unstable?

   • 1. not stable; not firm or firmly fixed; unsteady. 2. liable to change or fluctuate quickly: an unstable weather pattern. 3. marked by emotional instability. 4. unsteadfast; inconstant; wavering. 5. irregular in movement. 6. noting chemical compounds that readily decompose or change into other compounds. un•sta′ble•ness, n.

   Unstable - definition of unstable by The Free Dictionary

   www.thefreedictionary.com/unstable

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   What does stable mean in English?

   • The adjective unstable means the opposite of stable. Stable is derived from the Latin base word stare meaning “to stand.” If a building, family, person, bridge, or chemical solution is stable it will “stand still,” even if something unexpected happens.

   Unstable - Definition, Meaning & Synonyms | Vocabulary.com

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   How do you describe an unstable object?

   • You can describe something as unstable if it is likely to change suddenly, especially if this creates difficulty or danger. After the fall of Pitt in 1801 there was a decade of unstable government. The situation is unstable and potentially dangerous. Unstable objects are likely to move or fall. Both clay and sandstone are unstable rock formations.

   UNSTABLE definition and meaning | Collins English Dictionary

   www.collinsdictionary.com/dictionary/english/unstable

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   What does it mean if a person is stable?

   • Stable is derived from the Latin base word stare meaning “to stand.” If a building, family, person, bridge, or chemical solution is stable it will “stand still,” even if something unexpected happens. On the other hand, if a person or thing is unstable and stress is applied, he, she, or it is likely to shift position, possibly in a dangerous way.

   Unstable - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com/dictionary/unstable

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3. dictionary.cambridge.org › dictionary › englishUNSTABLE | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

   • Cached

   Unstable means not solid and firm and therefore not strong, safe, or likely to last. It can also describe a person who suffers from sudden and extreme changes of mental state. See synonyms, pronunciation, and translations of unstable.

   • English (US)

     UNSTABLE meaning: 1. not solid and firm and therefore not...

   • Znaczenie Unstable, Definicja W Cambridge English Dictionary

     UNSTABLE definicja: 1. not solid and firm and therefore not...

   • Unstable in French

     unstable translate: instable, instable, instable, instable,...

   • Simplified

     UNSTABLE translate: 不稳固的；不牢靠的；不安全的, （情绪）反复无常的，不稳定的. Learn...

   • Traditional

     UNSTABLE translate: 不穩固的；不牢靠的；不安全的, （情緒）反復無常的，不穩定的. Learn...

   • Unstable: Thai Translation

     unstable translate: ที่ไม่มั่นคง, ที่มีอารมณ์ผันผวน,...

   • Unstable: Danish Translation

     unstable - translate into Danish with the English-Danish...

   • Unstable: Czech Translation

     unstable - translate into Czech with the English-Czech...

4. www.merriam-webster.com › dictionary › unstableUnstable Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › unstable

   • Cached

   Learn the meaning of unstable, an adjective that describes something that is not stable, firm, or constant. See synonyms, examples, word history, and related phrases of unstable.

5. www.vocabulary.com › dictionary › unstableUnstable - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › unstable

   To be unstable is to lack stability, meaning things could change without warning, like an unstable bookshelf that is likely to fall down. If you are unstable emotionally, you might be ecstatically happy one minute and horribly depressed and angry the next.

6. www.dictionary.com › browse › unstableUNSTABLE Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › unstable

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   Unstable definition: not stable; not firm or firmly fixed; unsteady.. See examples of UNSTABLE used in a sentence.

7. www.collinsdictionary.com › english › unstableUNSTABLE definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › english › unstable

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   Learn the meaning of unstable as an adjective in different contexts, such as politics, chemistry, and psychology. Find synonyms, pronunciation, examples, and related words for unstable.

8. www.oxfordlearnersdictionaries.com › us › definitionunstable adjective - Definition, pictures, pronunciation and ...

   www.oxfordlearnersdictionaries.com › us › definition

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   Definition of unstable adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

9. www.thefreedictionary.com › unstableUnstable - definition of unstable by The Free Dictionary

   www.thefreedictionary.com › unstable

   • Cached

   Unstable means lacking stability, fixity, or firmness, or liable to change or fluctuate quickly. Find different meanings, examples, and translations of unstable in various contexts, such as chemistry, physics, and psychology.