more untruthful, most untruthful
The comparative degree is 'more magnificent' and the superlative degree is 'most magnificent'.
Shape is a noun and a verb and, as such, does not have a comparative or a superlative degree.
Comparative degree for the word 'full' is fuller Superlative for the same is fullest.
Cleanest is the superlative degree of the word clean. Cleaner is the comparative degree
better for its comparative and best for its superlative
put
more in, most in
more in, most in
More truthful and most truthful, respectively.
finer, finest
greedier, greediest
I'm not familiar with the word, but the comparative degree of an adverb is formed by placing the word "more" in front of it and the superlative degree of an adverb is formed by placing the word "most" in front of it.