Meaning : Liable to be erroneous or misleading.
Example :
An undependable generalization.
Synonyms : undependable
Meaning : Not worthy of reliance or trust.
Example :
In the early 1950s computers were large and expensive and unreliable.
An undependable assistant.
Synonyms : undependable
Worthy of reliance or trust.
A reliable source of information.Meaning : Dangerously unstable and unpredictable.
Example :
Treacherous winding roads.
An unreliable trestle.
Synonyms : treacherous
Meaning : Lacking a sense of responsibility.