Similar words: disingenuousness, ingenuous, disingenuous, arduousness, impetuousness, presumptuousness, dangerousness, joyousness. Meaning: [ɪn'dʒənjʊəsnɪs] 
n. 1. the quality of innocent naivete 2. openly straightforward or frank.
n. 1. the quality of innocent naivete 2. openly straightforward or frank. 
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1) Ingenuousness sometimes unconsciously penetrates deep.
2) The openness and ingenuousness of the boy has played a negative role in his fate.
3) He would acknowledge with perfect ingenuousness that his concession had been attended with such partial good.
4) Country cousin:One whose ingenuousness or rustic ways may be muse or entertain city dwellers.
5) He was at that period of life when the mind of men who think is composed, in nearly equal parts, of depth and ingenuousness .
6) He had said these things in a loud, rapid, hoarse voice, with a sort of irritated and savage ingenuousness .
More similar words: disingenuousness, ingenuous, disingenuous, arduousness, impetuousness, presumptuousness, dangerousness, joyousness, callousness, hideousness, anxiousness, viciousness, nervousness, seriousness, graciousness, covetousness, imperiousness, cautiousness, imperviousness, outrageousness, consciousness, righteousness, capriciousness, gregariousness, meticulousness, licentiousness, fastidiousness, tenuous, pretentiousness, unrighteousness.