1. Mentally sluggish
   - lumpen, unthinking

See also: stupid

• drought
• droughty
• drouth
• drove
• drove chisel
• drover
• drown
• drown out
• drowse
• drowse off
• drowsily
• drowsiness
• drowsing
• drowsy
• drub
• drubber
• drubbing
• drudge
• drudger
• drudgery
• drudging
• drug
• drug abuse
• drug addict
• drug addiction