Usually, by adding er. Fast, faster; smart, smarter; quick, quicker
As a noun and a verb, "make" does not have a comparative and superlative form.
A Geo is not comparative to a Cadillac in price or style.
"Litter" is a noun and a verb and, as such, does not have a comparative degree.
A comparative for the word ineffectual is more ineffectual.
smoother is comparative of word smooth.
comparative
In American slang, fly can be an adjective meaning cool or in style. That would make the comparative more fly.
comparative
comparative
Dative ; sharp Comparative ; sharper Superlative ; sharpest.
What's the comparative and superlative of the word "exact"
The comparative form of the word 'fast' is 'faster'.