smoother
Shape is a noun and a verb and, as such, does not have a comparative or a superlative degree.
Get is a verb and does not have comparative or superlative degrees.
thicker, thickest
Most vertical is the superlative, and more vertical is the comparative.
comparative: thicker superlative: thickest
smoother is comparative of word smooth.
The comparative degree of "holy" is "holier."
Teapot is a noun and, as such, does not have a comparative degree.
The comparative degree is wider.
"Less" is the comparative degree of little.
Thriftier is the comparative degree of thrifty.
The comparative degree for "lush" is "lusher."
The comparative degree of "light" is "lighter."
better for its comparative and best for its superlative
"Speed" is a noun and a verb and, as such, does not have a comparative degree. The comparative of the adjective speedy is speedier.
"Less" is the comparative degree of little. The superlative degree is least.
The comparative degree for "moody" is "more moody."