| IRR | without respect |
|---|---|
| IRR | the quality of being irreversible (once done it cannot be changed) |
| IRR | impossible to reverse or be reversed |
| IRR | impossible to reverse or undo |
| IRR | any process that is not reversible |
| IRR | in an irreversible manner |
| IRR | impossible to retract or revoke |
| IRR | in an irrevocable manner |
| IRR | impossible to retract or revoke |
| IRR | a region that is related ethnically or historically to one country but is controlled politically by another |
| IRR | the doctrine that irredenta should be controlled by the country to which they are ethnically or historically related |
| IRR | an advocate of irredentism |