It doesn't have it.
better for its comparative and best for its superlative
Better
there is no such thing as the superlative and comparative degree of better because better is the comparative form for well or good and the superlative for good or well is best
better, best
better, best
They are better and best respectively.
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."