LONG—extended, extensive. (Short.)
LOOK—appear, seem, aspect, glance, peep.
LOSE—miss, forfeit. (Gain.)
LOSS—detriment, damage, deprivation. (Gain.)
LOUD—clamorous, high-sounding, noisy. (Low, quiet.)
LOVE—affection. (Hatred.)
LOW—abject, mean. (Noble.)
LUNACY—derangement, insanity, mania, madness. (Sanity.)
LUSTER—brightness, brilliancy, splendor.
LUXURIANT—exuberant. (Sparse.)