IPA: /ɪnˈdʒɛnjʊəsnəs/
KK: /ɪnˈdʒɛnjʊəsnəs/
The quality of being open, honest, and sincere in one's thoughts and actions.
Her ingenuousness made her a trustworthy friend who always spoke the truth.
Ingenuousness → It is formed from "ingenuous" (from Latin "ingenuus", meaning freeborn or noble) and the suffix "-ness" (meaning the state or quality of). The word "ingenuousness" refers to the quality of being innocent, frank, or candid, often associated with a noble character.
Think of 'ingenuous' meaning noble or freeborn, and remember that 'ingenuousness' refers to the quality of being straightforward and innocent.