1. On the run or in a hurry
   "she wrote those letters on the fly"

Encyclopedia: On the fly

• legendary creature
• leger
• leger line
• legerdemain
• legerity
• legged
• legging
• leggy
• leghorn
• legibility
• legible
• legibly
• leging
• legion
• legionary
• legionary ant
• legionella
• Legionella pneumophilia
• legionnaire
• Legionnaires' disease
• legislate
• legislating
• legislation
• legislative
• legislative act