gradable

adj

1. (not-comparable)Able to form degrees or grades
2. (not-comparable)Able to occur in varying degrees; able to be inflected or modified to express degrees of meaning.

   “Hot and cold are gradable antonyms.”

3. (not-comparable)steep, but still able to be climbed by a motor vehicle

noun

1. A word that can be inflected to specify the degree or grade of something.