Entry 1 sense Webster, 1913 Ingenuously · In·gen·u·ous·ly · IPA /ɪnˈdʒɛnjuːəsli/ 01 adv. In an ingenuous manner; openly; fairly; candidly; artlessly. 1. In an ingenuous manner; openly; fairly; candidly; artlessly. “Being required to explain himself, he ingenuously confessed.” — Ludlow.