- trustworthy, trusty - worthy of trust or belief; "a trustworthy report"; "an experienced and trustworthy traveling companion"
Antonyms: untrustworthy, untrusty, devious, shifty, fly-by-night, shady, slippery, tricky, teflon, undependable, unreliable
- trustworthy - taking responsibility for one's conduct and obligations; "trustworthy public servants"
Antonym: irresponsible (indirect, via responsible)