Comparative - loftier.
Superlative - loftiest.
The comparative form of solid is solider
The comparative form of in is inner.
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".
"Loftier" is probably preferable, but you could say "more lofty" and be understood.
loftierloftiest THE RIGHT ANSWER -from my teacher and hundreds of webs
loftier
loftier, loftiest
loftiest
The comparative form of dreamy is dreamier
The comparative form of busy is busier.
The comparative form of friendly is friendlier.
The comparative form of many is more
The comparative form of "central" is "more central."
Loftiest
The comparative form of "clean" is "cleaner."