The term 'New Moon, For One' can be solved by two crossword solutions: 'PHASE' (5 letters) and 'Lunarphase' (10 letters). A new moon is the first PHASE of the lunar cycle, when the moon is not visible in the night sky. It occurs when the moon is positioned between the Earth and the Sun, and the illuminated side of the moon is facing away from Earth. The lunar PHASE following a new moon is called a waxing crescent.