Hardness
Hardness noun - Something that is a cause for suffering or special effort especially in the attainment of a goal.
Instability
Instability noun - The quality or state of not being firmly fixed in position.
Hardness is an antonym for instability.
Nearby Word: instance
How words are described
Cite this Source
Instability and Hardness. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/hardness/instability
Hardness & Instability. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/hardness/instability>.
Instability or Hardness. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/hardness/instability.
Google Ngram Viewer shows how "hardness" and "instability" have occurred on timeline