least vs superlative

least

prep
  • At least. 

  • What a stupid white privileged POS I am! Least I call myself out. 

  • 2019 December, Justin Blackburn, The Bisexual Christian Suburban Failure Enlightening Bipolar Blues, page 79 

det
  • The most little; the smallest amount or quantity of something. 

adv
  • Used for forming superlatives of adjectives, especially those that do not form the superlative by adding -est. 

  • In the smallest or lowest degree; in a degree below all others. 

noun
  • Something of the smallest possible extent; an indivisible unit. 

superlative

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

  • Of or relating to a 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. 

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