superlative vs uttermost

superlative

noun
  • The extreme (e.g. highest, lowest, deepest, farthest, etc) extent or degree of something. 

  • An adjective used to praise something exceptional. 

  • The form of an adjective that expresses which of several items has the highest degree of the quality expressed by the adjective; in English, formed by appending "-est" to the end of the adjective (for some short adjectives only) or putting "most" before it. 

adj
  • Exceptionally good; of the highest quality; superb. 

  • Of or relating to a superlative. 

uttermost

noun
  • The utmost; the highest or greatest degree; the farthest extent. 

adj
  • Outermost. 

  • Extreme; utmost; of the farthest, greatest, or highest degree. 

How often have the words superlative and uttermost occurred in a corpus of books? (source: Google Ngram Viewer )