The comparative form of much is more. The superlative is most.
The comparative form of in is inner.
The comparative form of solid is solider
comparative - merrier superlative - merriest
"Shine" is a verb and a noun and, as such, does not have a comparative form. The comparative form of the adjective shiny is shinier.
The comparative form of brown is "browner". The superlative form is "brownest".
The comparative form of much is 'more'. The superlative form of much is 'most'.
more
more
much,more,most
The comparative form of busy is busier.
The comparative form of friendly is friendlier.
The comparative form of dreamy is dreamier
more, most
more, most
comparative form is cleaner superlative form is cleanest
The comparative form of many is more
The comparative form of "central" is "more central."