Case hardened
Confirmed and case hardened are semantically related. In some cases you can use "Confirmed" instead an adjective phrase "Case hardened".
Confirmed
Confirmed adjective - Being such by habit and not likely to change.
Case hardened and confirmed are semantically related. Sometimes you can replace phrase "Case hardened" with "Confirmed", this terms are similar.
Cite this Source
Confirmed and Case hardened. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/case_hardened/confirmed
Case hardened & Confirmed. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/case_hardened/confirmed>.
Confirmed or Case hardened. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/case_hardened/confirmed.
Google Ngram Viewer shows how "case hardened" and "confirmed" have occurred on timeline