truth ‧ ful /ˈtruːθf ə l/ BrE AmE adjective
[ Word Family: adverb : ↑ truly , ↑ truthfully ≠ ↑ untruthfully , ↑ true ; noun : ↑ truth ≠ ↑ untruth , ↑ truthfulness ; adjective : ↑ true ≠ ↑ untrue , ↑ truthful ≠ ↑ untruthful ]
1 . someone who is truthful does not usually tell lies SYN honest :
a truthful child
You and I must be truthful with each other.
2 . a truthful statement gives the true facts about something SYN honest :
I have only one question to ask you, and I want a truthful answer.
—truthfully adverb :
Answer this question truthfully.
—truthfulness noun [uncountable]