dishonest, deceitful, mendacious, untruthful mean unworthy of trust or belief. dishonest implies a willful perversion of truth in order to deceive, cheat, or defraud. deceitful usually implies an intent to mislead and commonly suggests a false appearance or double-dealing.

Some common synonyms of untruthful are deceitful, dishonest, and mendacious. While all these words mean "unworthy of trust or belief," untruthful stresses a discrepancy between what is said and fact or reality. When is deceitful a more appropriate choice than untruthful?

What is another word for untruthful? Need synonyms for untruthful? Here's a list of similar words from our thesaurus that you can use instead. “He gave an untruthful apology, lacking sincerity and genuine remorse.”