unstable

Fetched 2026-11-03 (live).

Synonyms: instable, unstably, unitable, unsatable, dunstable, unstaple, notable, unsuitable, stable, constable, unseeable

Antonyms: instable, unstably, unitable, unsatable, dunstable, unstaple, notable, unsuitable, stable, constable, unseeable

Related words from Datamuse; suggestions, not definitions.

Adjective

1. Not stable.
   • unstable foundation
   • The structure is too unstable to stand safely.
2. Having a strong tendency to change.
3. Fluctuating; not constant.
   • politically unstable
   • The political situation remains unstable.
4. Fickle.
5. Unpredictable.
6. Readily decomposable.
   • chemically unstable
7. Radioactive, especially with a short half-life.

Verb

1. To release (an animal) from a stable.

Source: Wiktionary · CC BY-SA 3.0 (Wiktionary) · cached copy, not a rewrite.