n. The state or quality of being clearn. Freedom from anything that diminishes brightness, transparency, or purity of color: as, the clearness of water or other liquid; clearness of skin.n. Distinctness to the senses; the character of being readily and exactly perceived: as, clearness to the view.n. Freedom from obstruction or encumbrance: as, the clearness of the ground.n. Distinctness to the mind; perspicuity; intelligibility.n. Acuteness of thought; absence of mental confusion; perspicacity.n. Acuteness of a sense: as, clearness of sight.n. Plainness or plain dealing; sincerity; honesty; fairness; candor.n. Freedom from imputation or suspicion of ill.n. In painting, that peculiar quality in a picture which is realized by a skilful arrangement and interdependence of colors, tints, and tones, in accordance with the principles of chiaroscuro.