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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 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

   www.vocabulary.com/dictionary/unstable

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   What does unstable mean?

   • Get a quick, free translation! UNSTABLE definition: 1. not solid and firm and therefore not strong, safe, or likely to last: 2. An unstable person…. Learn more.

   UNSTABLE | English meaning - Cambridge Dictionary

   dictionary.cambridge.org/dictionary/english/unstable

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   What does it mean if you are unstable emotionally?

   • If you are unstable emotionally, you might be ecstatically happy one minute and horribly depressed and angry the next. The adjective unstable means the opposite of stable. Stable is derived from the Latin base word stare meaning “to stand.”

   Unstable - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com/dictionary/unstable

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   What is the difference between Inconstant and unstable?

   • The words inconstant and unstable are synonyms, but do differ in nuance. Specifically, inconstant implies an incapacity for steadiness and an inherent tendency to change. When could mercurial be used to replace unstable?

   UNSTABLE Synonyms: 115 Similar and Opposite Words - Merriam-Web…

   www.merriam-webster.com/thesaurus/unstable

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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 is the difference between fickle and unstable?

   • The words fickle and unstable can be used in similar contexts, but fickle suggests unreliability because of perverse changeability and incapacity for steadfastness. When is inconstant a more appropriate choice than unstable? The words inconstant and unstable are synonyms, but do differ in nuance.

   UNSTABLE Synonyms: 115 Similar and Opposite Words - Merriam-Web…

   www.merriam-webster.com/thesaurus/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...

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.merriam-webster.com › thesaurus › unstableUNSTABLE Synonyms: 115 Similar and Opposite Words | Merriam ...

   www.merriam-webster.com › thesaurus › unstable

   • Cached

   Unstable means not being in or able to maintain a state of balance, likely to change frequently, or not staying constant. Find synonyms, antonyms, and examples of unstable and related words in this online thesaurus.

   • The synonyms capricious and unstable are sometimes interchangeable, but capricious suggests motivation by sudden whim or fancy and stresses unpredi...
   • The words fickle and unstable can be used in similar contexts, but fickle suggests unreliability because of perverse changeability and incapacity f...
   • The words inconstant and unstable are synonyms, but do differ in nuance. Specifically, inconstant implies an incapacity for steadiness and an inher...
   • Although the words mercurial and unstable have much in common, mercurial implies a rapid changeability in mood. // made anxious by her boss's mercu...

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

   www.collinsdictionary.com › english › unstable

   • Cached

   Unstable means likely to change suddenly or easily upset, or unsteady or unreliable. It can also describe objects that are prone to decompose or radioactive particles that have a short lifetime.

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

   www.dictionary.com › browse › unstable

   • Cached

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

8. 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.

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

   www.oxfordlearnersdictionaries.com › us › definition

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   Unstable means likely to change suddenly or not staying in the same state. Learn how to use this adjective with synonyms, collocations and pictures from OxfordLearnersDictionaries.com.