Definition of unreliable in English:

unreliable

Line breaks: un|re¦li¦able
Pronunciation: /ʌnrɪˈlʌɪəb(ə)l
 
/

adjective

Not able to be relied upon: he’s lazy and unreliable unreliable information
More example sentences
  • Research has shown, however, that recall is unreliable and rife with inaccuracies and biases.
  • What a pity that Ms Evans' information comes from such an unreliable source.
  • Such knowledge as management did possess was vague or unreliable and seldom committed to writing.
Synonyms
undependable, untrustworthy, irresponsible, reckless, fickle, capricious, irregular, erratic, unpredictable, inconstant, mutable, faithless, untrue, flighty, slipperyquestionable, open to question, open to doubt, doubtful, dubious, suspect, unsound, tenuous, flimsy, weak, unsubstantial, implausible, unconvincing, unsupported, unsubstantiated, fallible, shaky, rocky; risky, chancy, disreputable, specious, defective; inaccurate, vague, untrue, incorrect, wide of the mark, off-target, wrong
informal iffy, dicey
British informal dodgy

Derivatives

unreliability

Pronunciation: /-ˈbɪlɪti/
noun
More example sentences
  • Percy Shelley was also an avowed atheist - and the Court of Chancery mostly relied on this, not on his infidelity or unreliability.
  • The overall unreliability of the study methodology contrasts with the brash confidence of the study report in asserting that the poor desire a sense of well-being over material wealth.
  • Compare that efficiency with the recent report that a Scottish businessman is so exasperated with the unreliability of the rail service to London that he has bought himself a private jet.

unreliably

adverb
More example sentences
  • The average wind turbine produces less electricity in a year than the average family car: they produce high - cost electricity unreliably.
  • But another part of me likes having a backup network, one that I can reach, if unreliably, from across the street.
  • Miller is a first-rate intellectual but an unreliably quirky, quixotically overcerebral, hit-or-miss director.

Definition of unreliable in:

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Word of the day impudicity
Pronunciation: ˌɪmpjʊˈdɪsɪti
noun
lack of modesty