Synonyms:
untrustworthy, untrusty
Meaning: not worthy of trust or belief; "an untrustworthy person"
Usage examples
Upon tablets of flawless marble let us carve his name in deep letters so that it may be well insured against the fugitiveness of our French memories, which, alas! have sometimes proved a little untrustworthy, at least in face of the age-long infamies of Germany.