Candor (noun)

1. The state of being open, honest, and sincere in speech or expression.
2. Frankness, honesty and directness in speech.

Origin:

From latin candor (whiteness, brightness, purity), from candere (to shine, to be white).

Examples:

1. She spoke with candor about her past mistakes.
2. The candor of his speech was refreshing.
3. The CEO"s candor about the company"s financial struggles won over many skeptics.
4. I appreciate your candor in this matter.
5. The candor of the witness during the trial was admirable.