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.
The most little; the smallest amount or quantity of something.
Something of the smallest possible extent; an indivisible unit.
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