Kukwasvatidza

Kukwasvatidza (Shape an object so that one end is thicker than the other).

 Mamwe Mazwi 

kwasvati (ideophone of Tapering - not necessarily to a point).
Kukwasvatidza (Flatten e.g. tin container - kupashamadza, 2. Deflate).
Kukwasvatika (Be, or be able to be, shaped so that one end is thicker than the other).
Kukwasvatika (Be, or be able to be flattened e.g. tin container, 2. Be, or be able to be, deflated).