(idiomatic) To engage in self-improvement; to begin a good habit or shed a bad habit.

(focus) At the least; at a minimum or lower limit. / In any event; anyway.

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

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.

(philosophy) Something of the smallest possible extent; an indivisible unit.

(archaic, outside of fixed terms) superlative degree of little; smallest

(informal, nonstandard) At least. / 2019 December, Justin Blackburn, The Bisexual Christian Suburban Failure Enlightening Bipolar Blues, page 79:

(usually used in the plural) A dried fragment of a leaf of the tea plant used in making the drink tea. / (Cockney rhyming slang) A thief.

The usually green and flat organ that represents the most prominent feature of most vegetative plants. / Anything resembling the leaf of a plant.

(intransitive) To produce leaves; put forth foliage. / (transitive) To divide (a vegetable) into separate leaves.