Greenbroke

Just halfway decent greenbroke horses. Say six saddles. Double and stop and stand still to be saddled.

Source: wiktionary

Maggie dashed away the tear tracks on her cheeks. “Thank you, Mr. Potts. I believe I' ll take you up on your offer as my colt is only greenbroke, and the only other horse I know how to ride is gone—pulling our cart .

Source: wiktionary

This is readily seen in the greenbroke horse that has yet to build full confidence in its rider. I have frequently observed the enhanced performance of the greenbroke horse when it is allowed to train or exercise in the company of others, whether that horse is familiar with its company or not.

Source: wiktionary

We'll add a greenbroke pack animal and you can break him on the trail.

Source: wiktionary