1. Process of changing to an inferior state
   - deterioration, declension, worsening

Type of: decline, diminution

• rifle ball
• rifle butt
• rifle grenade
• rifle range
• rifle shot
• riflebird
• rifled
• rifleman
• rifleman bird
• rifler
• rifling
• rift
• rift valley
• Rift Valley fever
• rig
• rig up
• Rig-Veda
• Riga
• rigadoon
• rigamarole
• rigatoni
• Rigel
• rigged
• rigger
• rigger brush