Adjective: untrusty ,ún'trú-stee
- Not worthy of trust or belief
"an untrusty person";
- untrustworthy
See also: devious, dishonest, dishonorable [US], dishonourable [Brit, Cdn], flakey [informal], flaky [informal], fly-by-night, shifty, slippery, tricky, undependable, unfaithful, unreliable