- 1 truthful (about something) (of a person) saying only what is true synonym honest They were less than truthful about their part in the crime. Are you being completely truthful with me? To be quite truthful with you, I don't like this color. a truthful witness
- 2(of a statement) giving the true facts about something a truthful answer opposite untruthful Word Familytrue adjective (≠untrue)truth noun (≠untruth)truthful adjective (≠untruthful)truthfully adverbtruly adverb
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NAmE//ˈtruθfəli//adverb She answered all their questions truthfully. I can truthfully say that I have never seen anything quite like it before.
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