Infirm and Unstable

Infirm

Infirm adjective - Lacking bodily strength.

Unstable is a synonym for infirm in change topic. In some cases you can use "Unstable" instead an adjective "Infirm", when it comes to topics like sick, irresolute, doddering.

Nearby Word: infirmity

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

Infirm is a synonym for unstable in change topic. You can use "Infirm" instead an adjective "Unstable", if it concerns topics such as weak.

Nearby Word: unstably
Cite this Source
Unstable and Infirm. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/infirm/unstable
Infirm & Unstable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/infirm/unstable>.
Unstable or Infirm. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/infirm/unstable.
Google Ngram Viewer shows how "infirm" and "unstable" have occurred on timeline