Direct Opposites:
* Lying: This is the most direct opposite, meaning deliberately stating falsehoods.
* Dishonest: This is a broader term encompassing various forms of deception.
* Untruthful: This is a synonym for lying.
Other Opposites Depending on Context:
* Deceptive: This suggests misleading or tricking someone without necessarily stating outright lies.
* Inaccurate: This refers to something that is not correct, even if not intentionally misleading.
* False: This is a general term for something not true, but can also refer to something that is a forgery or an imitation.
More Subtle Opposites:
* Unreliable: This implies someone who cannot be trusted to tell the truth consistently.
* Misleading: This suggests presenting information in a way that distorts the truth.
* Evasive: This describes someone who avoids giving a clear or truthful answer.
The best opposite for "truthful" will depend on what you want to communicate. Consider the specific situation and choose the word that best reflects the intended meaning.