Reverent is a related term of docile.
As a verb reverent
As an adjective docile is
yielding to control or supervision, direction, or management.
showing respect or reverence; respectful
Yielding to control or supervision, direction, or management.
Ready to accept instruction or direction.
* (yielding to control): compliant, malleable, meek, submissive, tractable
* (ready to accept instruction): amenable, compliant, teachable
* (yielding to control): rebellious, wilful