unreliable.

Unable to be depended on for consistent accuracy or performance.

Use it for

Words that belong together

• unreliable source
• unreliable estimate

On the page

The inconsistent dates make the source unreliable.

Usage notes

Primary category: analysis / argumentation / evidence. Forms: Comparative more unreliable; superlative most unreliable when comparison is meaningful. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: evidence, inference, qualification. Commonness: common.