- Mental or sensory distinctness; clarity of understanding, perception etc. [from 16th c.]
- The state of being free from obscurities or opacity; distinctness of light, colour etc. [from 17th c.]
- The clearness of the water meant I could still see the key lying on the river-bed.
- The state of being free from obstruction or interference. [from 17th c.]
- The clearness of the path made for an easy hike.
From clear +"Ž -ness