allow (one) free rein(redirected from allowed him free rein)
allow (one) free rein
To give one complete freedom to do what one wants or chooses. Can you believe the boss allowed me free rein on this project? Finally, I can present a campaign with my own vision!
give/allow somebody/something free/full ˈrein,
give/allow free/full ˈrein to somebody/somethingnot restrict, limit or control something: In a novel the author need not keep to the facts, but a textbook is not the place to give free rein to your imagination. OPPOSITE: keep a tight rein on somebody/something
A rein is a long leather band that is fastened around a horse’s neck and used by the rider to control the speed of the horse.