unreliable

The company completed the restatement of past financial reports that were found to have overstated revenue and labeled as “unreliable” earlier this year.

Many operators hire contractors to walk across accessible portions of the landfill with a handheld leak-monitoring device, an approach that some environmental advocates say is unreliable.

Whether or not the unidentified whistle blower has an ax to grind is unknown to me, but plainly the email is not a list of wild accusations hurled by an unreliable gadfly.

Early frontrunner status in Democratic primaries has proven historically unreliable, as previous early leaders ultimately failed to secure the nomination, indicating that current polling and momentum may not predict eventual success.

The PhD student described herself as naturally a "spontaneous person" but said often she is so exhausted she fears cancelling dates may give the wrong impression that she's unreliable or worse, uninterested.