Synonyms for unstable
ʌnˈsteɪ bəlun·sta·ble

Wiktionary(5.00 / 1 vote)Rate these synonyms:

1. unstableadjective

   Synonyms:
   instable

   Antonyms:
   stable

2. unstableadjective

   having a strong tendency to change

   Synonyms:
   instable

   Antonyms:
   stable

3. unstableadjective

   fluctuating; not constant

   Synonyms:
   instable

   Antonyms:
   stable

4. unstableadjective

   fickle

   Synonyms:
   instable

   Antonyms:
   stable

5. unstableadjective

   unpredictable

   Synonyms:
   instable

   Antonyms:
   stable

6. unstableadjective

   Readily decompasable

   Synonyms:
   instable

   Antonyms:
   stable

7. unstableadjective

   Radioactive, especially with a short half-life

   Synonyms:
   instable

   Antonyms:
   stable

English Synonyms and Antonyms(3.00 / 1 vote)Rate these synonyms:

1. unstable

   Uncertain is applied to things that human knowledge can not certainly determine or that human power can not certainly control; precarious originally meant dependent on the will of another, and now, by extension of meaning, dependent on chance or hazard, with manifest unfavorable possibility verging toward probability; as, one holds office by a precarious tenure, or land by a precarious title; the strong man's hold on life is uncertain, the invalid's is precarious.

   Synonyms:
   doubtful, dubious, equivocal, hazardous, insecure, perilous, precarious, risky, unassured, uncertain, unsettled, unsteady

   Antonyms:
   actual, assured, certain, firm, immutable, incontestable, infallible, real, settled, stable, steady, strong, sure, undeniable, undoubted, unquestionable

Princeton's WordNet(3.00 / 1 vote)Rate these synonyms:

1. unstableadjective

   lacking stability or fixity or firmness

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

   Synonyms:
   unsound, fluid, precarious, mentally ill

   Antonyms:
   sane, firm, easy, lasting, stabilised, stabilized, resolute, unreactive, stable, unfluctuating, stabile, steady, unchangeable

2. unstableadjective

   highly or violently reactive

   "sensitive and highly unstable compounds"

   Synonyms:
   unsound, fluid, precarious, mentally ill

   Antonyms:
   stabilized, lasting, firm, stabile, unchangeable, easy, stable, steady, stabilised, resolute, unreactive, sane, unfluctuating

3. precarious, unstableadjective

   affording no ease or reassurance

   "a precarious truce"

   Synonyms:
   mentally ill, perilous, parlous, precarious, shaky, touch-and-go, unsound, fluid

   Antonyms:
   stabilised, stable, lasting, unchangeable, unfluctuating, stabile, easy, stabilized, unreactive, steady, resolute, sane, firm

4. mentally ill, unsound, unstableadjective

   suffering from severe mental illness

   "of unsound mind"

   Synonyms:
   mentally ill, bad, unfit, fallacious, precarious, unsound, fluid

   Antonyms:
   steady, easy, unreactive, lasting, resolute, firm, stabilised, sane, stabile, stable, unfluctuating, unchangeable, stabilized

5. unstableadjective

   disposed to psychological variability

   "his rather unstable religious convictions"

   Synonyms:
   unsound, fluid, precarious, mentally ill

   Antonyms:
   resolute, lasting, sane, stabilized, unfluctuating, stabilised, stable, stabile, firm, unchangeable, steady, easy, unreactive

6. fluid, unstableadjective

   subject to change; variable

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

   Synonyms:
   mentally ill, mobile, liquid, fluent, runny, smooth, precarious, unsound, fluid

   Antonyms:
   firm, lasting, stable, stabile, resolute, steady, unfluctuating, unreactive, unchangeable, sane, easy, stabilised, stabilized

Dictionary of English Synonymes(0.00 / 0 votes)Rate these synonyms:

1. unstableadjective

   Synonyms:
   UNSTEADY

Synonyms, Antonyms & Associated Words(0.00 / 0 votes)Rate these synonyms:

1. unstableadjective

   Synonyms:
   insecure, unsteady, irresolute, inconstant, erratic

PPDB, the paraphrase database(0.00 / 0 votes)Rate these paraphrases:

1. List of paraphrases for "unstable":

   volatile, instability, unsettled, precarious, unsteady, shaky, fragile, destabilizing, uncertain, ever-shifting, labile, insecure, destabilization, stable, fluid

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How to use unstable in a sentence?

1. Barack Obama:

   As the first woman to serve as America's top diplomat, Madeleine's courage and toughness helped bring peace to the Balkans and paved the way for progress in some of the most unstable corners of the world.

2. Vladimir Putin:

   When they won the Cold War, the US declared themselves God's own representatives on earth, people who have no responsibilities -- only interests. They have declared those interests sacred. Now Cold War's one-way traffic, which makes the world unstable.

3. Bobby Bank/Getty:

   I was very unstable. I wasn’t thinking right. So I hooked up with these guys and all of a sudden I’m a stick-up artist. I stuck up every nightclub in New York, i’m no angel.

4. John Tims:

   The experts that weve spoken to have said it is unsafe for us to go on that island. The island is unstable, the physical environment is unsafe for us to return to the island, it is important that we consider the health and safety of those that will return to the island.

5. Rachel Kyte:

   The implications of unmitigated climate change for the UAE make its cities unbearably hot, water even more scarce and the region more unstable, action alone and collectively to live in balance with the planet is fundamental for UAE's future prosperity.