flighted vs flightless

flighted

adj
  • Having a specified number or kind of flights (of stairs, a screw thread, etc.). 

  • Capable of flight. 

flightless

adj
  • Unable to fly. Usually used with birds such as the penguin, ostrich, and emu. 

How often have the words flighted and flightless occurred in a corpus of books? (source: Google Ngram Viewer )