Definition from Wiktionary, the free dictionary
- Free from obstructions.
- Please allow unimpeded access to the fire escape.
2016 June 11, Phil McNulty, “England 1-1 Russia”, in BBC Sport:
- As the final whistle sounded, hordes of Russian fans ran unimpeded, and seemingly without any serious police presence or any barrier to stop them, towards England supporters gathered in their section of the stand.