| Least 1. (a.) Smallest, either in size or degree; shortest; lowest; most unimportant; as, the least insect; the least mercy; the least space. 2. (adv.) In the smallest or lowest degree; in a degree below all others; as, to reward those who least deserve it. 3. (conj.) See Lest. Thesaurus Entries at a disadvantage, at the nadir, below, below the mark, few, homely, humble, humble-looking, humble-visaged, humblest, in the gutter, inglorious, innocuous, least of all, less, littlest, low, lowest, lowliest, lowly, mean, minim, minimum, minority, minority group, modest, plain, poor, short of, shortest, simple, slightest, small, smallest, teachable, the few, the minority, under, under par, undistinguished, unimportant, unpretentious, we happy few |