1. truthful(a = adj.all) true - expressing or given to expressing the truth; "a true statement"; "gave truthful testimony"; "a truthful person"
Antonym: untruthful
Derived form noun truthfulness1
2. truthful(s = adj.all) - conforming to truth; "I wouldn't have told you this if it weren't so"; "a truthful statement"
Full of truth; veracious; reliable. [1913 Webster]
truthful, adj.
1 habitually speaking the truth.
2 (of a story etc.) true.
3 (of a likeness etc.) corresponding to reality.
Derivative:
truthfully adv. truthfulness n.
N veracity, truthfulness, frankness truth, sincerity, candor, unreserve, honesty, fidelity, plain dealing, bona fides, love of truth, probity, ingenuousness, the truth the whole truth and nothing but the trut, honest truth, sober truth, unvarnished tale, light of truth, truthful, true, veracious, veridical, scrupulous, sincere, candid, frank, open, straightforward, unreserved, open hearted, true hearted, simple-hearted, honest, trustworthy, undissembling &c (dissemble), guileless, pure, truth- loving, unperjured, true blue, as good as one's word, unaffected, unfeigned, bona fide, outspoken, ingenuous, undisguised, uncontrived, truly, in plain words, in truth, with truth, of a truth, in good truth, as the dial to the sun, as the needle to the pole, honor bright, troth, in good sooth, in good earnest, unfeignedly, with no nonsense, in sooth, sooth to say, bona fide, in foro conscientiae, without equivocation, cartes sur table, from the bottom of one's heart, by my troth, di il vero a affronterai il diavolo, Dichtung und Wahrheit, esto quod esse videris, magna est veritas et praevalet, that golden key that opes the palace of eternity, veritas odium parit, veritatis simplex oratio est, verite sans peur.