untrustworthy

adjective

1. deserving of trust or confidence; dependable; reliable: The treasurer was not entirely trustworthy.

adjective

1. not worthy of being trusteduntrustworthy witnesses

adjective

1. worthy of being trusted; honest, reliable, or dependable

adj.1846, from un- (1) “not” + trustworthy. adj.1791, from trust (n.) + worthy. Related: Trustworthiness.