scopey

scope +‎ -y

scopey (comparative more scopey, superlative most scopey)

1. Of a horse: capable of performing jumps in a stylish and skilful manner.
   • 2015 October 9, Chris Cook, “Horse by horse guide to Paul Nicholls’ stable for the new jumps season”, in The Guardian‎:

     There’s no rush, he’s only four, he’s big and scopey and when he jumps fences, he’ll be really exciting.

• Copsey