Adjective

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