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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. 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...

3. 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.

4. 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.

5. www.collinsdictionary.com › dictionary › englishUNSTABLE definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   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.

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

   www.dictionary.com › browse › unstable

   • Cached

   adjective. not stable; not firm or firmly fixed; unsteady. liable to fall or sway. Synonyms: precarious. unsteadfast; inconstant; wavering: unstable convictions. Synonyms: vacillating. marked by emotional instability: an unstable person. irregular in movement: an unstable heartbeat.

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

   www.thefreedictionary.com › unstable

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   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.

8. www.oxfordlearnersdictionaries.com › english › unstableunstable adjective - Definition, pictures, pronunciation and...

   www.oxfordlearnersdictionaries.com › english › unstable

   • Cached

   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.