Meaning of “unreliable” in the English Dictionary

american-english dictionary

"unreliable" in British English

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uk /ˌʌn.rɪˈlaɪə.bəl/ us /ˌʌn.rɪˈlaɪə.bəl/

B2 not able to be trusted or believed:

The bus service is unreliable.
unreliable evidence

More examples

  • Several unreliable dealers have been struck off our list of authorized suppliers.
  • "He's so unreliable!" she said crossly.
  • Managers had complained that the workers were lazy and unreliable.
  • I wouldn't ask Angie to do it, she's completely unreliable.
  • Don't be influenced by the figures, they're a bit unreliable.

(Definition of “unreliable” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"unreliable" in American English

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us /ˌʌn·rɪˈlɑɪ·ə·bəl/

not to be trusted or depended on:

Their carpenter was totally unreliable – he never finished the job.

(Definition of “unreliable” from the Cambridge Academic Content Dictionary © Cambridge University Press)