English Reference
Adjective

unambiguous

adj.
B2 Upper Intermediate US /ˌənæmˈbɪɡjəwəs/ UK /ʌnæmbˈɪɡjuːəs/ un·am·bigu·ous

adj.clear and easy to understand. You use this to describe something that does not have any hidden meanings or confusing parts.

adj.clearly expressed or defined; leaving no room for doubt or misinterpretation. Often used to describe language, signals, or instructions that are precise and direct.


SIMPLE

The instructions are very unambiguous.

CONTEXTUAL

The manager gave unambiguous instructions that everyone must leave the building immediately.

COMPLEX

The legal document was written with such unambiguous language that even the most skeptical lawyer could not find a loophole to challenge the contract.

The poem is known for containing the first unambiguous literary reference to Robin Hood.

The Guardian· 27 Aug 2026

Unambiguous insect fossils do not become abundant until the Late Carboniferous.

Phys.org· 27 Aug 2026

From un- + ambiguous.

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

This entry
Level B2 · Upper Intermediate
Frequency Occasional
Updated