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Definition of unreliable adjective from the Oxford Advanced Learner's Dictionary

unreliable

adjective
 
/ˌʌnrɪˈlaɪəbl/
 
/ˌʌnrɪˈlaɪəbl/
Word Family
  • rely verb
  • reliable adjective (≠ unreliable)
  • reliably adverb
  • reliability noun (≠ unreliability)
  • reliance noun
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  1. that cannot be trusted or depended on
    • The trains are notoriously unreliable.
    • He's totally unreliable as a source of information.
    • The judge found that she was an unreliable witness.
    opposite reliable
    Oxford Collocations DictionaryUnreliable is used with these nouns:
    • indicator
    • source
    • witness
    See full entry
See unreliable in the Oxford Advanced American DictionarySee unreliable in the Oxford Learner's Dictionary of Academic English
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