Truthful/ˈtruːθfl/ Definition 1 of 2Pro Tip 1/3Personal Honesty Use 'truthful' to describe someone who speaks their true thoughts or feelings. He was truthful about his challenges. Pro Tip 2/3Beyond Facts 'Truthful' goes beyond facts; it implies integrity in one's words and actions. She was known to be a truthful leader. Pro Tip 3/3Moral Character Calling someone 'truthful' suggests a positive moral character. The judge found the witness to be truthful.