Both are correct, but they are used differently: Honestly (adverb) – used when speaking or expressing an opinion. "Honestly, I don't know." "Honestly, that was the best choice." Honesty (noun) – means truthfulness or the quality of being honest. "Honesty is important." "I appreciate your honesty." If you want to start a sentence like "To be truthful...", use "Honestly": ✅ "Honestly, I don't think so." ❌ "Honesty, I don't think so."
