trustworthy/trusty

accurate always there authentic authoritative convincing credible dependable ethical exact honest honorable kosher levelheaded mature on the level on the up and up open plausible principled realistic responsible righteous rock solid saintly secure sensible solid square steadfast straight there to be trusted tried tried-and-true true true-blue trustable truthful unfailing up-front upright valid veracious

corrupt unbelievable undependable unreliable untrustworthy