As a two-syllable adjective ending in a consonant sound, it is uncommon to use a single word to refer to the comparitive and superlative - such as you would use the words "rich", "richer" and "richest". It is much more acceptable to use the words "gorgeous", "more gorgeous", and "most gorgeous", in this situation.
The comparative form is "more/less thrilling" (ex. some opinions are that motorbikes are more thrilling than cars). However, the superlative is "the most thrilling" as it is slightly irregular lexis and the suffix 'est' cannot be added to the end as with 'greatEST' or 'fastEST' (ex. motorbikes are the most thrilling things on the road.)
more gorgeous, most gorgeous
more stunning most stunning
more gorgeous / most gorgeous
Thiling
more gorgeous and most gorgeous
most thrilling
The comparative form of gloomy is gloomier, the superlative form is gloomiest.
The comparative form of easy is easier, and the superlative form is easiest.
More important is the comparative form, and most important is the superlative form.
More responsible is the comparative form; most responsible is the superlative form.
most thrilling
comparative - merrier superlative - merriest
"Older" is the comparative form of old. The superlative form is oldest.
Bitter is a comparative and a bittest is superlative
Sweetie is a noun and does not have a comparative or superlative form.
Comparative: older Superlative: oldest
The comparative form of cloudy is "cloudier". The superlative form is "cloudiest".
"Larger" is the comparative form of large. The superlative form is largest.
The comparative form of easy is easier, and the superlative form is easiest.
The comparative form of gloomy is gloomier, the superlative form is gloomiest.
"Easier" is the comparative form of easy. The superlative form is easiest.
The comparative form of "well" is "better" and the superlative form is "best."