unless.
To make less; to diminish; to reduce.
To become less.
To raise, put onto a higher place.
To move forward (especially when waiting in a queue / line).
To move one's position to allow others to occupy a place.
To be promoted.
To pass to a higher level.
To put higher on a list.
To promote, put onto a higher level.
To reschedule (something) to an earlier date or time.