Definition of Unstable

1. Adjective. Lacking stability or fixity or firmness. "An unstable world economy"


2. Adjective. Highly or violently reactive. "Sensitive and highly unstable compounds"
Similar to: Reactive
Derivative terms: Unstableness

3. Adjective. Affording no ease or reassurance. "A precarious truce"
Exact synonyms: Precarious
Similar to: Uneasy
Derivative terms: Precariousness, Unstableness

4. Adjective. Suffering from severe mental illness. "Of unsound mind"
Exact synonyms: Mentally Ill, Unsound
Similar to: Insane
Derivative terms: Unsoundness, Unstableness

5. Adjective. Disposed to psychological variability. "His rather unstable religious convictions"
Similar to: Irresolute
Derivative terms: Unstableness

6. Adjective. Subject to change; variable. "Everything was unstable following the coup"
Exact synonyms: Fluid
Similar to: Changeable, Changeful
Derivative terms: Fluidness

Definition of Unstable

1. a. Not stable; not firm, fixed, or constant; subject to change or overthrow.

2. a. Not stable; not firm, fixed, or constant; subject to change or overthrow.

Definition of Unstable

1. Adjective. having a strong tendency to change ¹

2. Adjective. fluctuating; not constant ¹

3. Adjective. fickle ¹

4. Adjective. unpredictable ¹

5. Adjective. (chemistry) Readily decompasable ¹

6. Adjective. (physics) Radioactive, especially with a short half-life ¹

¹ Source: wiktionary.com

Definition of Unstable

1. stable [adj -BLER, -BLEST] - See also: stable

Lexicographical Neighbors of Unstable

unsquarable
unsquareable
unsquared
unsquashed
unsqueaking
unsqueaky
unsqueamish
unsqueeze
unsqueezed
unsqueezes
unsqueezing
unsquelched
unstabilised
unstability
unstabilized
unstable (current term)
unstable angina
unstable bladder
unstable cervical spine fractures
unstable colloid
unstable fracture
unstable mutation
unstable patient
unstabled
unstableness
unstablenesses
unstabler
unstablest

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