1. Sleep inducing
   - soporific, soporiferous, somniferous, hypnogogic, hypnagogic

See also: depressant

• redetermine
• redevelop
• redevelopment
• redevelopment authority
• redeye
• redeye flight
• redfin pickerel
• redfish
• Redford
• redhead
• redheaded
• redheaded woodpecker
• redheader
• redhibition
• redhibitory
• redhorse
• redhorse sucker
• redia
• redial
• Rediffusion
• redingote
• redintegrate
• redirect
• redirect examination
• redirection