"Splendid" doesn't have a comparative and superlative form. Instead, you would say "more splendid" or "most splendid."
more splendid
For the word "splendid," the comparative is more splendid and the superlative is most splendid
more splendid
more splendid, most splendid
more splendid, most splendid
If splendidest was a word, it would be a superlative. The comparative form of splendid is more splendid, the superlative form is most splendid.
i DON'T KNW
In monosyllabic words, the comparative and the superlative are usually made by adding -er or -est respectively. For two syllables when the word ends in "y," change the "y" to an "i" and add -er and -est. For two syllables not ending in "y" and for words of more than two syllables, regardless of what they end in, the word is preceded by "more" or "most." The word "splendid" is no exception. The comparative is "more splendid," and the superlative is "most splendid."
The superlative degree of "splendid" is "most splendid."
Possessing or displaying splendor; shining; very bright; as, a splendid sun., Showy; magnificent; sumptuous; pompous; as, a splendid palace; a splendid procession or pageant., Illustrious; heroic; brilliant; celebrated; famous; as, a splendid victory or reputation.
Splendid Animation was created in 2001.
Splendid Fellows was created in 1934.
Splendid Fairywren was created in 1830.