Plunging is a term used to describe a type of motion that involves a rapid downward movement. This motion can be described by the crossword solutions dropping (8 letters), falling (7 letters), PITCHING (8 letters), and TUMBLING (8 letters). Dropping is the act of letting something fall from a higher to a lower level, while falling is the act of moving from a higher to a lower level due to gravity. PITCHING is the act of throwing something forward with an upward or downward motion, and TUMBLING is the act of rotating in the air while falling.