At an earlier time.
In advance.
At the front end.
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).
Rather or sooner than.
In advance of the time when.
In the place of something (usually mentioned earlier); as a substitute or alternative.