undeliverable
nounEtymology From un- + deliverable.
1
A message, parcel, etc. that cannot be delivered.
undeliverable
adjEtymology From un- + deliverable.
1
Not able to be delivered.
- The dead letter office keeps undeliverable mail.
- The ambitious project to build 500 new hospitals was later deemed to be undeliverable.
- Derived terms
- undeliverability, undeliverableness