Synonyms for unstable
ʌnˈsteɪ bəl

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

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"

   Synonyms:
   unsound, fluid, precarious, mentally ill

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

2. unstable(adj)

   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, unstable(adj)

   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, unstable(adj)

   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. unstable(adj)

   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, unstable(adj)

   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

Wiktionary(5.00 / 1 vote)Rate these synonyms:

1. unstable(adjective)

   Synonyms:
   instable

   Antonyms:
   stable

2. unstable(adjective)

   having a strong tendency to change

   Synonyms:
   instable

   Antonyms:
   stable

3. unstable(adjective)

   fluctuating; not constant

   Synonyms:
   instable

   Antonyms:
   stable

4. unstable(adjective)

   fickle

   Synonyms:
   instable

   Antonyms:
   stable

5. unstable(adjective)

   unpredictable

   Synonyms:
   instable

   Antonyms:
   stable

6. unstable(adjective)

   Readily decompasable

   Synonyms:
   instable

   Antonyms:
   stable

7. unstable(adjective)

   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

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

1. unstable(a.)

   Synonyms:
   UNSTEADY

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

1. unstable(a)

   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

How to pronounce unstable?

Alex

US English

Daniel

British

Karen

Australian

Veena

Indian

How to say unstable in sign language?

Words popularity by usage frequency

How to use unstable in a sentence?

1. Sharon Allen:

   These are mentally unstable people and there's not enough nurses, we do have a ticking time bomb.

2. Alekka Fullerton:

   The whole side of the hill has come down, the problem is, it's dark now, and it is still highly unstable.

3. Donald Trump:

   Well I'm looking to do background checks. I think background checks are important. I don't want to put guns into the hands of mentally unstable people or people with rage or hate.

4. Andrew Miller:

   To meet the huge challenge of feeding a burgeoning global population, using fewer resources, as our climate becomes increasingly unstable, we will need to use all of the tools at our disposal, be they social, political, economic or technological, regulatory reform is no longer merely an option, it is a necessity.

5. Michael Pregent:

   If you simply allow the Shiite Muslim political parties, the 60 % population of Iraq, to form a government, Shiite Muslim parties will continue to have an unstable northern Iraq where threats are incubated.

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