Openness, honesty, or straightforwardness of conduct; directness or frankness of language. Also in negative sense: unguardedness of language…

Openness and sincerity of conduct; honesty, candour, straightforwardness.

Unreservedness in speech, etc.; openness, frankness.

Uprightness, straightforwardness; openness. Now rare.

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

The quality of being apert; openness; frankness.

The quality of being downright; directness, straightforwardness of speech or behaviour.

(un-, prefix1 affix 6.)

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

The plain truth. Also: candour, frankness. Obsolete.

(un-, prefix1 affix 6.)

Openness; lack of reserve or concealment.

the quality of being forthright; straightforwardness.