More
more, most
more, the most
The comparative form of the word 'fast' is 'faster'.
Dative ; hot Comparative ; hotter Superlative ; hottest
"Less" is a comparative of the word little. Its superlative form is least.
more
comparative is more and superlative is most.
more,most
more, most
more, the most
They are more and most.
more, most
more, most
more, most
more, most
more, most
"Litter" is a noun and a verb and, as such, does not have a comparative degree.