spec. Absence of dissimulation, secrecy, or reserve; frankness, candour, sincerity.

The quality of having an open heart; candour.

Freedom from dissimulation; honesty, straightforwardness, sincerity; honourable or fair dealing; freedom from reserve, openness, candour, frankness…

Freedom of address or manner; absence of disguise, reserve, or suspicion; candour, ingenuousness, openness.

The quality of being unreserved; absence of or freedom from reserve, restraint, or inhibition.

The quality of being straightforward.

‘onefoldness’, simplicity.

The quality of being outright in speech or thought; directness, straightforwardness; an instance of this.