somewhat formal
: impossible to change back to a previous condition or state
He suffered an irreversible loss of vision.
The crisis has done irreversible harm to the countries' relations.
Cite this Entry
“Irreversible.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/irreversible. Accessed 15 Jun. 2026.
Copy Citation
