a. - Smaller; not so large or great; not so much; shorter; inferior; as, a less quantity or number; a horse of less size or value; in less time than before.
adv. - Not so much; in a smaller or lower degree; as, less bright or loud; less beautiful.
n. - A smaller portion or quantity.
n. - The inferior, younger, or smaller.
v. t. - To make less; to lessen.