Synonyms for unstable
ʌnˈsteɪ bəlun·sta·ble

WiktionaryRate these synonyms:5.0 / 1 vote

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 AntonymsRate these synonyms:3.0 / 1 vote

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 WordNetRate these synonyms:3.0 / 1 vote

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 SynonymesRate these synonyms:0.0 / 0 votes

1. unstableadjective

   Synonyms:
   UNSTEADY

Synonyms, Antonyms & Associated WordsRate these synonyms:0.0 / 0 votes

1. unstableadjective

   Synonyms:
   insecure, unsteady, irresolute, inconstant, erratic

PPDB, the paraphrase databaseRate these paraphrases:0.0 / 0 votes

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?

How to say unstable in sign language?

Words popularity by usage frequency

How to use unstable in a sentence?

1. Brian Lattimer:

   Balancing on any type of terrain that's unstable - especially for bipedal robots - is very difficult, whole-body momentum control allows for the robot to optimize the locations of all of its joints so that it maintains its center of mass on uncertain and unstable surfaces.

2. Saint Jerome:

   An unstable pilot steers a leaking ship, and the blind is leading the blind straight to the pit. The ruler is like the ruled.

3. Van Dam:

   Early season snowpack can be highly unstable because of the lack of consistent storms, once the storm door is open to more frequent snow events in January and February, snow begins to pile up in layers on top of the unstable, early season snowfall.

4. Mickey Mehta:

   Today life is going through unstable paces, animals slaved in cages and food exhibited in show-cases. We eat trash, our language is brash, life is a dash and humanity is about to crash. Black is cash, party is a bash and cleansing is just a splash. Wake up, come back to nature or else a human being will just be reduced to a caricature . Let your life be naturalized, get MickeyMized.

5. Janusz Korczak:

   Whatever has been achieved through pressure and violence is unstable, unreliable and incorrect.