The term 'clearness' can be defined by eight crossword solutions: EVIDENCE (8 letters), PURITY (6 letters), SIMPLICITY (10 letters), BRIGHTNESS (10 letters), PLAINNESS (9 letters), TRANSPARENCY (12 letters), lucency (7 letters), LUCIDITY (8 letters), and CLARITY (7 letters). EVIDENCE refers to facts or proof that can be used to support a claim. PURITY is the state of being free from contamination or impurities. SIMPLICITY is the quality of being uncomplicated or easy to understand. BRIGHTNESS is the quality of being luminous or shining. PLAINNESS is the quality of being simple, unadorned, or straightforward. TRANSPARENCY is the quality of being able to be seen through. Lucency is the quality of being translucent or partially transparent. LUCIDITY is the quality of being clear and easily understood. CLARITY is the quality of being easily understood or expressed. Together, these words describe the concept of clearness.