flightiest

Adjective

flighty (comparative flightier, superlative flightiest)

1. Given to unplanned and silly ideas or actions.
2. That flies easily or often.
   • "We know that flighty birds suffer from greater risk of raptor predation, and I assume that it is useful to understand the effects of urbanization because flighty species may be more vulnerable to anthropogenic disturbance."2013, Diego Gil, Henrik Brumm, Avian Urban Ecology
3. (dated) Swift.
   • Permanent way and other checks then somewhat slowed down this flighty progress.1962 July, Cecil J. Allen, “Locomotive Running Past and Present”, in Modern Railways, page 44