Definition of truthful adjective from the Oxford Advanced Learner's Dictionary

     

    truthful

     adjective
    adjective
    BrE BrE//ˈtruːθfl//
     
    ; NAmE NAmE//ˈtruːθfl//
     
    Moral, Honest
     
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  1. 1truthful (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’m not very keen on this colour. a truthful witness See related entries: Moral, Honest
  2. 2(of a statement) giving the true facts about something a truthful answer
  3. opposite untruthful
    Word Familytrue adjective (untrue)truth nountruthful adjective (untruthful)truthfully adverbtruly adverbExtra examples I don’t think you are being entirely truthful. She was completely truthful about her involvement in the affair. She was unable to give a truthful answer.
See the Oxford Advanced American Dictionary entry: truthful