candor

noun

1. the state or quality of being frank, open, and sincere in speech or expression; candidness: The candor of the speech impressed the audience.
2. freedom from bias; fairness; impartiality: to consider an issue with candor.
3. Obsolete. kindliness.
4. Obsolete. purity.

n.

“openness of mind, impartiality, frankness,” c.1600, from Latin candor “purity, openness,” originally “whiteness,” from candere “to shine, to be white” (see candle). Borrowed earlier in English (c.1500) with the Latin literal sense “extreme whiteness.”