1. [ adjective ] liable to be erroneous or misleading
Synonyms: unreliable

"an undependable generalization"

Related terms: fallible
2. [ adjective ] not to be trusted
Synonyms: unreliable
Related terms: untrustworthy
3. [ adjective ] not worthy of reliance or trust
Synonyms: unreliable

"in the early 1950s computers were large and expensive and unreliable" "an undependable assistant"

Related terms: reliable reliable uncertain erratic unsound untrustworthy
Similar spelling:   undependably