At an earlier time.
In advance.
At the front end.
Rather or sooner than.
In advance of the time when.
In front of, according to a formal system of ordering items.
In store for, in the future of (someone).
At a higher or greater position than, in a ranking.
Under consideration, judgment, authority of (someone).
In the presence of.
In front of in space.
Earlier than (in time).