Hello Maria: I am not entirely sure if I understand the question about Extreme Adjectives, or Degree Adjectives; but I think it may Mean something like the distinction between absolute opposits (the Extremes) and the Degrees or variations of either extreme. In philosophy, this Degree is referred to as a MEAN VALUE. So, an example of the Extremes would be Black & White. Gray would be a Degree adjective. Male / Female would be extremes, and Androgyne would be a Degree or Mean Value between the extremes. Hot and Cold would be Extreme, and Warm or Cool would be a degree. . . We could also think on the Superlatives and their scale of values, as in Good---------Better------Best. I think that can give you some idea of the concept. I hope this is an accurate answer. I don't know everything you see, but I try.---Warm Regards, Bruce .