Some adjectives, because of their definition, can never be comparative or superlative.
Here is a list of these words:
blind
dead
right/wrong
unique
final
A person can be partially blind, but a person cannot be more blind or less blind.
Something dead cannot be more dead or less dead; something final cannot be more final or less final.
A person or an idea is either right or wrong. It’s impossible to be more right or less right.
Something unique cannot be compared to anything else.
It’s good to know that certain adjectives are never comparative or superlative.
▶Now you try it. Find the adjectives in this sentence that will not have comparative or superlative form. I had three wrong answers on my final exam in biology. Did you find the adjectives? Good for you!