Usage Note
Irréversible is an invariable adjective (same form masculine/feminine) and is common in medical, legal, and environmental discourse. The noun is l'irréversibilité. Its opposite réversible also doubles as the French word for a reversible jacket, making it a handy vocabulary connection.
Examples
"Les dommages causés sont irréversibles."
Natural Translation
The damage caused is irreversible.

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