A shape that has a name consisting of seven letters could be a hexagon. A hexagon is a six-sided polygon.
Hexagon
ellipse
hexagon?
DODECAHEDRON
what is the opposite of smoother in seven letters
Both advisor and counsel have seven letters.
This color is chestnut or auburn but not seven letters.
There is no such shape.
A seven sided shape is called a heptagon.
A seven sided 2D shape is a heptagon.
you call a seven sided shape a heptagon.