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unstable

/ʌnˈsteɪ.bəl/adjective3 syllables

Unstable means: lacking stability or fixity or firmness.

Synonyms for unstable37

adjective, as in lacking stability or fixity or firmness

coseismic, coseismal, crank, cranky, tender, tippy, explosive, volatile, rickety, shaky, wobbly, wonky, rocky, seismic
and 9 more, seismal, tipsy, top-heavy, tottering, volcanic, impermanent, temporary, inconstant, unsteady

adjective, as in suffering from severe mental illness

mentally ill, unsound, insane

adjective, as in subject to change; variable

fluid, changeable, changeful

adjective, as in affording no ease or reassurance

precarious, uneasy

adjective, as in highly or violently reactive

reactive

adjective, as in disposed to psychological variability

irresolute

also used for unstable

labile, instable, arbitrary, capricious

Includes material from Wiktionary, CC BY-SA 4.0.

Opposites of unstable

stable

What does unstable mean?6

adjective

1

lacking stability or fixity or firmness“unstable political conditions”

2

suffering from severe mental illness“of unsound mind”

3

subject to change; variable“a fluid situation fraught with uncertainty”

4

affording no ease or reassurance“a precarious truce”

5

highly or violently reactive“sensitive and highly unstable compounds”

6

disposed to psychological variability“his rather unstable religious convictions”

Definitions from the Open English WordNet, CC BY 4.0.

What rhymes with unstable?12

two syllables

abletablecablestablelabelabelfablegablesable

three syllables

unableenabledisable
Show 40 near rhymes
informationdatatakeneducationaprilchangessituationaustraliacreatedcasesplacesassociationpopulationstationstatementadministrationaustralianlatestoperationorganizationpatientsnationoperationsapplicationlocationfamousgenerationagentbasisfoundationnationsgreatestpatientconversationinvestigationasianancientcommunicationorganizationsrelations

Unstable in a sentence

  • Fortune is unstable, while our will is free.Scott
  • Don't play near the cliffs, they can be unstable.Amastan
  • For some time, their relationship had been unstable.Nuel
  • An alpha male is an untested, unstable, buggy, and incomplete version of a male.shekitten
  • Her family regards her as crazy and unstable.Nuel
  • Don't climb on unstable rocks or steep slopes.Amastan
  • People's emotional lives are becoming more and more unstable.n1ls
  • Karl was unstable and on some kind of drug.Amastan

Sentences from Tatoeba, CC BY 2.0 FR, credited to their authors.