Integrity as in
1. the quality of being honest and having strong moral principles; moral uprightness.
"he is known to be a man of integrity"
synonyms: honesty, uprightness, probity, rectitude, honor, honorableness, upstandingness, good character, principle(s), ethics, morals, righteousness, morality, nobility, high-mindedness, right-mindedness, noble-mindedness, virtue, decency, fairness, scrupulousness, sincerity, truthfulness, trustworthiness
"I never doubted his integrity"
antonyms: dishonesty