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Definition of undeliverable
undeliverable
/ˌʌndɪˈlɪvərəbəl/
un · de · liv · er · a · ble
Plural:undeliverables
undeliverable Lexical Profile
CEFR
B2
Grade
7
Tier
2
Usage
Top 10k
Syllables
6
undeliverable Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Unable to be delivered to the intended recipient, especially of mail, packages, or electronic messages due to an incorrect address or unavailable receiver.
Example
"The postal service returned the letter to the sender because the missing apartment number made it undeliverable."
2
Incapable of being fulfilled, produced, or provided as promised.
Example
"Critics argued that the candidate's ambitious campaign pledges were financially undeliverable."
Synonyms
View all synonyms for undeliverable Antonyms
View all antonyms for undeliverable• noun
1
A piece of mail, parcel, or electronic message that cannot be delivered to its intended recipient.
Example
"The mailroom clerk sorted through a bin of undeliverables to verify if any forwarding addresses were on file."
Synonyms
View all synonyms for undeliverable• Rhymes for undeliverable
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Cite this Entry
Wordmom. (2026). Definition of Undeliverable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/undeliverable