Disturbing the smoothness of something is a common phrase used to describe the act of disrupting the natural flow of an object or situation. The crossword solutions for this phrase are RUMPLE (6 letters), RUFFLE (6 letters), STUTTER (7 letters), FLUIDITY (8 letters), GLASS (5 letters), SILK (4 letters), and EASE (4 letters). These words can be used to describe the disruption of the smoothness of various objects, such as rumpling a piece of SILK, ruffling a GLASS surface, stuttering a FLUIDITY, or disturbing the EASE of something.