Undeliverable

adj, noun

adj, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A message, parcel, etc. that cannot be delivered.
Adjective
  1. 1
    Not able to be delivered. not-comparable

    "The dead letter office keeps undeliverable mail."

Example

More examples

"The dead letter office keeps undeliverable mail."

Etymology

From un- + deliverable.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.