1) Easiest to understand 2) Least cloudy 3) Least likely to rain 4) Least obscure 5) Most apparent 6) Most distinct 7) Most like crystal 8) Most lucid 9) Most obvious 10) Most transparent 11) Purest Found on https://www.crosswordclues.com/clue/clearest
1) Easiest to understand 2) Least cloudy 3) Least likely to rain 4) Least obscure 5) Most apparent 6) Most distinct 7) Most like crystal 8) Most lucid 9) Most obvious 10) Most transparent 11) Purest