Related Clues:

• Desensitize
• *See 61-Across
• Without an edge
• Not at all bright
• Hardly fascinating
• Like Soviet architecture
• Far from colorful
• Faded and dull
• Far from flashy
• Lacking in color
• Unlike the life of the party
• Not the life of the party
• Dull, as a color
• Dull and uninteresting
• Dull-colored, or just plain dull