1. Extremely irritating to the nerves
   "nerve-racking noise"
   - nerve-wracking, stressful, trying

See also: disagreeable

• claqueur
• Clara Josephine Schumann
• Clare Booth Luce
• clarence
• Clarence Darrow
• Clarence Day
• Clarence Malcolm Lowry
• Clarence Seward Darrow
• Clarence Shepard Day Jr.
• claret
• claret cup
• clarification
• clarified butter
• clarifier
• clarify
• clarifying
• clarinet
• clarinet section
• clarinetist
• clarinettist
• clarion
• clarity
• Clark
• Clark cell
• Clark Gable