| laundered(adjective, clear, simple, bright, pure) |
| leaden(adjective, dull, flat, boring, lifeless) |
| leek(noun, condiment) |
| lenient(adjective, weak, smooth, gentle, plain) |
| lifeless(adjective, dull, weak, simple, flat) |
| light(adjective, weak, smooth, pleasant, gentle) |
| literal(adjective, simple, clean, plain, ordinary) |
| looker(noun, slang, beauty, girl) |
| lukewarm(adjective, weak, smooth, pleasant, gentle) |
| lusterless(adjective, dull, simple, flat, clean) |
| mainstream(dull, ordinary, usual, normal, obvious) |
| matte(adjective, dull, weak, flat, boring) |
| matter-of- fact(expression, adjective, simple, clean, plain) |
| matter-of-course(common, natural, usual, normal, obvious) |
| mayonnaise(noun, condiment) |
| mediocre(adjective, commonplace, average) |
| medium(adjective, dull, weak, smooth, pleasant) |
| mere(adjective, simple, clean, plain, pure) |
| middling |
| mild(adjective, dull, weak, pleasant, gentle) |