flexy

From flex +‎ -y.

• Rhymes: -ɛksi

flexy (comparative flexier or more flexy, superlative flexiest or most flexy)

1. Implying or indicating an ability, capacity, or tendency to flex; flexible; bendy.
   • 1975 Sep, Ski, volume 40, number 1, page 24:

     Up front, a new softer "floating" cuff and a tapered rib— both for easier flex. At the rear, a new lightweight and responsive back. ... that cradles the calf In short, everything Hank hankered for. The Avanti's shell has our softest, flexiest plastic yet.

   • 2012, Grant Petersen, Just Ride: A Radically Practical Guide to Riding Your Bike - Page 32:

     If the pedal can't flex, the shoe can't—no matter how flexy it may be just out of the box. Besides, the part of your foot that's behind the pedal can't flex while you're pedaling, because your foot mechanics won't allow it.

• bendsome