Clearness, pureness.

Lucidity of exposition or expression; clearness to the perception or comprehension.

The condition or quality of being distinctly or clearly perceptible; distinctness. Obsolete.

The quality of being dilucid; clearness, lucidity.

Clearness: in various current uses; e.g. of colour, sky, atmosphere, sight, intellect, judgement, conscience, style.

With the: the sense expressed plainly in English; the simple meaning of. Now rare.

The condition or quality of being distinct or clear; clearness, plainness. As a quality of the object: Capability of being clearly perceived or…

Lucidity.

(un-, prefix1 affix 6.)

The quality or condition of being lucid; brightness, luminosity; now chiefly figurative intellectual clearness; transparency of thought or expression.

The quality or condition of being luminous.

Luminous quality or condition; luminosity.

The state of not being ambiguous.

Australian. In expressions such as a drover's dog could do that, it's obvious to a drover's dog, etc., indicating that something could be done or…