unreliable meaning and definition

UNRELIABLE adjective

Definition of unreliable (adjective)

1. liable to be erroneous or misleading
   • "an undependable generalization"
   • synonyms: undependable
2. not worthy of reliance or trust
   • "in the early 1950s computers were large and expensive and unreliable"; "an undependable assistant"
   • synonyms: undependable
   • antonym: dependable
3. dangerously unstable and unpredictable
   • "treacherous winding roads"; "an unreliable trestle"
   • synonyms: treacherous
4. lacking a sense of responsibility