Irreversible
Irreversible adjective - Not capable of being repaired, regained, or undone.
Lost and irreversible are semantically related. in irrevocable topic. In some cases you can use "Lost" instead an adjective "Irreversible".
Nearby Word: irreversibly
Lost
Lost adjective - No longer possessed.
Irreversible and lost are semantically related. You can use "Irreversible" instead an adjective "Lost".
Nearby Word: losing
Mutual synonyms
Both words in one sentence
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Lost in Space: The 1998 film has the family searching for a new home for humanity after Earth has suffered irreversible ecological damage.
Source: Gaia's Lament -
Years later he lost his entire fortune in an absurdly unrealistic way that didn't withstand a single minute of reflection, but was repeatedly emphasized as being irreversible and permanent.
Source: Series / Bones -
At one point, he worries about overclocking it too much, as damaging his brain would be irreversible, since his Healing Factor is another side effect of his ability, but using it requires great focus, which would be lost along with his brain.
Source: Super Reflexes
Cite this Source
Lost and Irreversible. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/irreversible/lost
Irreversible & Lost. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/irreversible/lost>.
Lost or Irreversible. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/irreversible/lost.
Google Ngram Viewer shows how "irreversible" and "lost" have occurred on timeline