1. People collectively who are mentally retarded
   - mentally retarded, retarded

Type of: people

• screening
• screenland
• screenplay
• screenshot
• screenwriter
• screw
• screw auger
• screw augur
• screw eye
• screw jack
• screw key
• screw log
• kinetic theory of gases
• kinetic theory of heat
• kinetics
• kinetochore
• Kinetoscope
• kinetosis
• kinfolk
• king
• King Arthur
• King Arthur's Round Table
• king begonia
• King Camp Gilette
• King Charles spaniel