The term 'clear as ___' is a common phrase used to describe something that is easily understood or seen. The crossword solutions for this phrase are DAY (3 letters), ERASE (5 letters), and DEFOG (5 letters). DAY is often associated with clarity, as the sun's light can make things easier to see. ERASE is a verb meaning to remove or delete something, which can also help to make something clearer. Defog is a verb meaning to remove fog or mist, which can also help to make something more visible.