advertise is a verb not an adjective so doesn't have a comparative or superlative form
Comparative: older Superlative: oldest
The comparative and superlativeforms of grand are: Comparative: grander Superlative: grandest
what is the comparative and superlative of glad
What is the comparative and superlative of Often
comparative - merrier superlative - merriest
The comparative is "stricter" and the superlative is "strictest".
Comparative: shallower Superlative: shallowest
The superlative of "sad" is "saddest" and the comparative is "sadder".
The comparative is greater and the superlative is greatest.
comparative - rockier superlative - rockiest
comparative is calmer superlative is calmest
The comparative is higher. The superlative is highest.