That which cannot be rectified or made good
A
Irreparable
B
Irrevocable
C
Irreconcilable
D
Irreplaceable
Correct Answer: Irreparable
One word substitute is Irreparable.Irreparable: (of an injury or loss) impossible to rectify or repair.
Irrevocable: not able to be changed, reversed, or recovered; final.
Irreconcilable: (of ideas or statements) so different from each other that they cannot be made compatible.
Irreplaceable: impossible to replace if lost or damaged.