1. Without official authorization
   "he had made some money on the side"
   - unofficially

Encyclopedia: On the side

• dolourous
• dolphin
• dolphin kick
• dolphin oil
• dolphin striker
• dolphinarium
• dolphinfish
• dolt
• doltish
• doltishly
• Dom
• Dom Pedro
• domain
• domain name
• domain of a function
• domatium
• dombeya
• dome
• dome-shaped
• domed
• domed stadium
• Domenikos Theotocopoulos
• Domesday Book
• domestic
• domestic animal