unbridled

Unrestrained; uncontrolled.

Not wearing or not fitted with a bridle.

Not having a bridle on; hence, unrestrained; unruly; violent; licentious.

Loosed from the bridle, or as from the bridle; hence, unrestrained; licentious; violent.

not fitted with a bridle

without restraint or boundary

Simple past of unbridle.

not restrained or controlled