Related Clues:

• *See 61-Across
• Sharp's opposite
• Not at all bright
• Crackbrained
• Hardly fascinating
• Hardly Ph.D. material
• Like Soviet architecture
• Far from colorful
• Faded and dull
• Far from flashy
• Make absurdly easy, with "down"
• Lacking in color
• Imbecilic
• Dull, as a color
• Dull and uninteresting