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

• cast on
• cast out
• cast-iron
• cast-iron plant
• cast-off
• Castanea
• Castanea chrysophylla
• Castanea crenata
• Castanea dentata
• Castanea mollissima
• Castanea ozarkensis
• Castanea pumila
• Castanea sativa
• castanets
• Castanopsis
• Castanopsis chrysophylla
• Castanospermum
• castaway
• caste
• caste system
• casteless
• castellan
• castellated
• castellation
• caster