English Reference

Word

unsigned

Phoneticsun·signed

US/ənˈsaɪnd/

UK/ʌnsˈaɪnd/

Definition

adj. describing a document or piece of work that does not have a signature or a name on it.

adj. lacking a signature or formal identification of authorship. In computing, refers to software or code that has not been verified by a digital certificate.

Examples

“The bank rejected the unsigned check.”

“The operating system warned the user that installing unsigned drivers could lead to security vulnerabilities.”

“Historians debated the origin of the unsigned manuscript, searching for stylistic clues that might link the text to a known 18th-century philosopher.”

Examples

simple

“The bank rejected the unsigned check.”

contextual

“The operating system warned the user that installing unsigned drivers could lead to security vulnerabilities.”

complex

“Historians debated the origin of the unsigned manuscript, searching for stylistic clues that might link the text to a known 18th-century philosopher.”

Usage

Often used attributively before a noun; in technical contexts, it can also describe a numeric variable that cannot represent negative values.

Real-World Examples

“The court announced the decision in an unsigned order , without providing an explanation.”
The Guardian · 18 Aug 2026
“The unsigned opinion also cited the national security concerns that the government says the project would address.”
Al Jazeera · 31 Aug 2026

Etymology

From un- + signed.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Domain

Computing

This entry

Level
B2 · Upper Intermediate
Frequency
Occasional
Updated

Scan code

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English Reference