1. Moving upward or along at a considerable height
   "some highflying fighter pilot fired a cannon shell into it" 
2. Extravagant or ambitious or extreme in aims or opinions
   "they did not understand what had happened at the once highflying company"

See also: ascending, unrestrained

• snub
• snub-nosed
• snuff
• snuff film
• snuff it
• snuff out
• snuff user
• snuff-brown
• snuff-color
• snuff-colour
• snuffbox
• snuffbox fern
• snuffer
• snuffers
• equinoctial circle
• equinoctial line
• equinoctial point
• equinoctial storm
• equinoctial year
• equinox
• equip
• equipage
• equipment
• equipment casualty
• equipment failure