lu

lucid (adj.) clear, easily understandable (Because Guenevere’s essay was so lucid, I only had to read it once to understand her reasoning.)

luminous (adj.) brightly shining (The light of the luminous moon graced the shoulders of the beautiful maiden.)

lurid (adj.) ghastly, sensational (Gideon’s story, in which he described a character torturing his sister’s dolls, was judged too lurid to be printed in the school’s literary magazine.)