unreliable
-
(s) liable to be erroneous or misleading
- an undependable generalization
-
(a) not worthy of reliance or trust
- in the early 1950s computers were large and expensive and unreliable
- an undependable assistant
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(s) dangerously unstable and unpredictable
- treacherous winding roads
- an unreliable trestle
- (s) lacking a sense of responsibility