(1):

(v. t.) To make less; to lessen.

(2):

(n.) The inferior, younger, or smaller.

(3):

(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.

(4):

(adv.) Not so much; in a smaller or lower degree; as, less bright or loud; less beautiful.

(5):

(n.) A smaller portion or quantity.

(6):

(conj.) Unless.