Related Clues:

• Lacking sharpness
• Straight to the point? But there is no point!
• Plain-spoken - lacking point
• Obtuse - tedious - cloudy
• Slow-witted - tedious - cloudy
• Dull — outspoken — spy
• Forthright – Soviet spy
• Dull-edged
• Unlikely to cut
• Far from vivid
• Mind-numbing
• Not interesting
• Less than tactful
• Hard to cut with
• Like some finishes