least

/list/

#684 of the most-used English words

noun

1. Something of the smallest possible extent; an indivisible unit.

adverb

1. Used for forming superlatives of adjectives, especially those that do not form the superlative by adding -est.
   "It was the least surprising thing."
2. In the smallest or lowest degree; in a degree below all others.
   "They travel the least of all."