1. Mentally sluggish
   - lumpen, unthinking

See also: stupid

• sparkler
• sparkling
• sparkling water
• sparkling wine
• sparkly
• sparkplug wrench
• sparky
• sparling
• Sparmannia
• Sparmannia africana
• sparring
• sparring match
• sparring mate
• sparring partner
• sparrow
• sparrow hawk
• Sparrow Unit
• sparrow-sized
• sparse
• sparsely
• sparseness
• sparsity
• Sparta
• Spartacus
• spartan