The comparative form of "sorry" is "sorrier." It is used to compare the level of regret or sympathy expressed by two subjects. For example, one might say, "I feel sorrier for him than for her."
comparative-sorrier superlative-sorriest
There is no comparative of get.
comparative
comparative
"Litter" is a noun and a verb and, as such, does not have a comparative degree.
comparative-sorrier superlative-sorriest
There is no comparative of get.
The comparative of "first" is "earlier" or "prior".
comparative
comparative
comparative
comparative
The comparative and superlativeforms of grand are: Comparative: grander Superlative: grandest
The comparative form of "clean" is "cleaner."
His is a possessive pronoun and, as such, does not have a comparative form.
The comparative form of friendly is friendlier.
The comparative is greater and the superlative is greatest.