Synonyms of unreliable

Adjective

1. undependable, unreliable, fallible (vs. infallible)

usage: liable to be erroneous or misleading; "an undependable generalization"

2. unreliable (vs. reliable), undependable (vs. dependable), erratic, temperamental, uncertain, unsound, untrustworthy#1, untrusty

usage: not worthy of reliance or trust; "in the early 1950s computers were large and expensive and unreliable"; "an undependable assistant"

3. treacherous, unreliable, dangerous (vs. safe), unsafe

usage: dangerously unstable and unpredictable; "treacherous winding roads"; "an unreliable trestle"

4. unreliable, irresponsible (vs. responsible)

usage: lacking a sense of responsibility

Definition and meaning of unreliable (Dictionary)