Related Clues:

• Not for the thin-skinned
• Not sharp, as a pencil
• Hard to endure
• Harsh-plus
• Painfully frank
• Painfully forthright
• Not pulling any punches
• Punishingly difficult
• To the point, ironically
• Like an épée's point
• Short on finesse
• See 15 Across
• Very harsh
• Painful, as honesty
• Needing sharpening