1. Serving to support or corroborate
   - collateral, confirmative, confirming, confirmatory, corroborative, corroboratory, substantiating, validating, validatory, verificatory, verifying

See also: substantiate, supportive

• flight
• flight attendant
• flight control
• flight deck
• flight engineer
• flight feather
• flight indicator
• flight line
• flight maneuver
• flight manoeuvre
• flight of stairs
• flight of steps
• flight path
• flight recorder
• flight simulator
• flight strip
• flight surgeon
• flighted
• flightily
• flightiness
• flightless
• flightless bird
• flighty
• flimflam
• flimflammer