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Definition unreliable in British English

unreliable adjective

adjective
/ˌʌnrɪˈlaɪəb(ə)l/
1

unreliable information is not definitely true or accurate

Example

Membership figures are unreliable.

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2

someone who is unreliable will not do what you ask them to do, or will not do it well

Example

Don't ask Jan - she's too unreliable.

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2.1

things such as equipment or methods that are unreliable will not work without problems

Example

The car's unreliable in wet weather.

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3

an unreliable witness is someone whose evidence is unlikely to be accepted in a court of law

Definition unreliable in British English