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

Encyclopedia: On the side

• vacuolation
• vacuole
• vacuolisation
• vacuolization
• vacuous
• vacuously
• vacuousness
• vacuum
• vacuum aspiration
• vacuum bag
• vacuum bomb
• vacuum bottle
• vacuum chamber
• vacuum cleaner
• vacuum flask
• vacuum gage
• vacuum gauge
• vacuum pump
• vacuum tube
• vacuum-clean
• vacuum-packed
• vade mecum
• vadose
• vadose zone
• Vaduz