Unstable and Unsound

Unstable

Unstable adjective - Not being in or able to maintain a state of balance.
Usage example: the minute we put the books down on the unstable desk, the whole stack went crashing to the floor

Unsound is a synonym for unstable. In some cases you can use "Unsound" instead an adjective "Unstable". popular alternative

Nearby Word: unstably

Unsound

Unsound adjective - Suffering from severe mental illness.
Usage example: of unsound mind

Unstable is a synonym for unsound in disordered topic. You can use "Unstable" instead an adjective "Unsound", if it concerns topics such as flimsy, rickety. popular alternative

Nearby Words: unsounded, unsoundly
Cite this Source
Unsound and Unstable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/unstable/unsound
Unstable & Unsound. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/unstable/unsound>.
Unsound or Unstable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/unstable/unsound.
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