keep in a certain state, position, or activity; e.g., "keep clean"
continue a certain state, condition, or activity
at or to or toward the back or rear
the posterior part of a human (or animal) body from the neck to the end of the spine
retain possession of
stop (someone or something) from doing something or being in a certain state
in or to or toward a past time
conform one's action or practice to
related to or located at the back
the side that goes last or is not normally seen
